./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_with_lookup_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_with_lookup_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:08:54,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:08:54,577 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:08:54,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:08:54,582 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:08:54,619 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:08:54,619 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:08:54,620 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:08:54,620 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:08:54,623 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:08:54,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:08:54,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:08:54,624 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:08:54,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:08:54,625 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:08:54,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:08:54,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:08:54,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:08:54,626 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:08:54,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:08:54,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:08:54,627 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:08:54,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:08:54,627 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:08:54,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:08:54,628 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:08:54,628 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:08:54,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:08:54,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:08:54,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:08:54,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:08:54,630 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:08:54,630 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:08:54,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:08:54,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:08:54,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:08:54,631 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:08:54,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:08:54,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:08:54,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:08:54,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:08:54,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:08:54,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:08:54,854 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:08:54,854 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:08:54,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2023-11-23 08:08:55,836 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:08:56,190 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:08:56,191 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2023-11-23 08:08:56,219 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeaeead23/ae035381aa2749b9bbc57e083b57f9ac/FLAGd73acdf4b [2023-11-23 08:08:56,229 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeaeead23/ae035381aa2749b9bbc57e083b57f9ac [2023-11-23 08:08:56,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:08:56,235 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:08:56,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:08:56,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:08:56,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:08:56,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:08:56" (1/1) ... [2023-11-23 08:08:56,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbe647e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:56, skipping insertion in model container [2023-11-23 08:08:56,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:08:56" (1/1) ... [2023-11-23 08:08:56,328 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:08:56,510 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_append_with_lookup_harness.i[4505,4518] [2023-11-23 08:08:56,518 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_append_with_lookup_harness.i[4565,4578] [2023-11-23 08:08:57,052 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,053 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,055 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,056 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,057 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,068 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,069 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,070 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,072 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,324 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:08:57,325 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:08:57,325 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:08:57,326 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:08:57,327 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:08:57,327 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:08:57,327 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:08:57,328 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:08:57,328 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:08:57,328 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:08:57,438 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,439 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,492 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,493 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:08:57,649 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:08:57,663 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_append_with_lookup_harness.i[4505,4518] [2023-11-23 08:08:57,664 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_append_with_lookup_harness.i[4565,4578] [2023-11-23 08:08:57,690 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,690 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,691 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,692 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,692 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,703 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,704 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,705 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,705 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,740 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:08:57,742 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:08:57,742 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:08:57,743 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:08:57,743 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:08:57,743 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:08:57,744 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:08:57,744 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:08:57,744 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:08:57,745 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:08:57,780 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,781 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,815 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8297] [2023-11-23 08:08:57,816 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,817 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:08:57,825 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8783-8794] [2023-11-23 08:08:57,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:08:58,004 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,004 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,004 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,005 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,005 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,005 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,005 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,005 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,005 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,006 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,006 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,006 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,006 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,006 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,007 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,007 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,007 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,007 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:08:58,012 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:08:58,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:58 WrapperNode [2023-11-23 08:08:58,013 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:08:58,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:08:58,014 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:08:58,014 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:08:58,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:58" (1/1) ... [2023-11-23 08:08:58,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:58" (1/1) ... [2023-11-23 08:08:58,149 INFO L138 Inliner]: procedures = 690, calls = 2649, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 958 [2023-11-23 08:08:58,150 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:08:58,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:08:58,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:08:58,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:08:58,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:58" (1/1) ... [2023-11-23 08:08:58,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:58" (1/1) ... [2023-11-23 08:08:58,170 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:58" (1/1) ... [2023-11-23 08:08:58,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:58" (1/1) ... [2023-11-23 08:08:58,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:58" (1/1) ... [2023-11-23 08:08:58,216 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:58" (1/1) ... [2023-11-23 08:08:58,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:58" (1/1) ... [2023-11-23 08:08:58,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:58" (1/1) ... [2023-11-23 08:08:58,245 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:08:58,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:08:58,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:08:58,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:08:58,247 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:58" (1/1) ... [2023-11-23 08:08:58,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:08:58,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:08:58,276 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 08:08:58,298 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 08:08:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 08:08:58,323 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 08:08:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 08:08:58,323 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 08:08:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:08:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:08:58,324 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:08:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:08:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 08:08:58,324 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 08:08:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:08:58,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:08:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:08:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:08:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:08:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:08:58,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:08:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:08:58,326 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:08:58,326 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:08:58,326 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:08:58,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:08:58,326 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 08:08:58,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 08:08:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:08:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:08:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:08:58,327 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:08:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 08:08:58,327 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 08:08:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2023-11-23 08:08:58,327 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2023-11-23 08:08:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 08:08:58,328 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 08:08:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:08:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:08:58,544 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:08:58,546 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:08:59,270 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:08:59,379 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:08:59,379 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 08:08:59,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:08:59 BoogieIcfgContainer [2023-11-23 08:08:59,380 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:08:59,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:08:59,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:08:59,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:08:59,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:08:56" (1/3) ... [2023-11-23 08:08:59,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fea6d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:08:59, skipping insertion in model container [2023-11-23 08:08:59,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:08:58" (2/3) ... [2023-11-23 08:08:59,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fea6d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:08:59, skipping insertion in model container [2023-11-23 08:08:59,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:08:59" (3/3) ... [2023-11-23 08:08:59,387 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness.i [2023-11-23 08:08:59,401 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:08:59,401 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:08:59,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:08:59,453 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;@2a7916be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:08:59,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:08:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 88 states have internal predecessors, (111), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-23 08:08:59,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 08:08:59,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:08:59,471 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 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] [2023-11-23 08:08:59,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:08:59,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:08:59,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1744607093, now seen corresponding path program 1 times [2023-11-23 08:08:59,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:08:59,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364772574] [2023-11-23 08:08:59,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:08:59,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:08:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:59,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:08:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:59,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:08:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:59,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:08:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:59,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:08:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:59,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:08:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:08:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:59,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:08:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:00,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:00,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:09:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:00,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:09:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:09:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:00,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:09:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:00,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:09:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:00,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:09:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:00,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:09:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:00,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 08:09:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 08:09:00,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:00,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364772574] [2023-11-23 08:09:00,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364772574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:00,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:09:00,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 08:09:00,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456491892] [2023-11-23 08:09:00,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:00,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 08:09:00,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:00,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 08:09:00,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:09:00,133 INFO L87 Difference]: Start difference. First operand has 145 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 88 states have internal predecessors, (111), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:09:00,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:00,611 INFO L93 Difference]: Finished difference Result 288 states and 421 transitions. [2023-11-23 08:09:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 08:09:00,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 93 [2023-11-23 08:09:00,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:00,621 INFO L225 Difference]: With dead ends: 288 [2023-11-23 08:09:00,621 INFO L226 Difference]: Without dead ends: 143 [2023-11-23 08:09:00,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:09:00,632 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 63 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:00,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 163 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:09:00,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-23 08:09:00,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-23 08:09:00,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 86 states have (on average 1.244186046511628) internal successors, (107), 87 states have internal predecessors, (107), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-23 08:09:00,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 194 transitions. [2023-11-23 08:09:00,673 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 194 transitions. Word has length 93 [2023-11-23 08:09:00,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:00,674 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 194 transitions. [2023-11-23 08:09:00,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:09:00,674 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 194 transitions. [2023-11-23 08:09:00,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 08:09:00,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:00,677 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 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] [2023-11-23 08:09:00,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:09:00,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:00,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:00,678 INFO L85 PathProgramCache]: Analyzing trace with hash -340161405, now seen corresponding path program 1 times [2023-11-23 08:09:00,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:00,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540403789] [2023-11-23 08:09:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:00,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:09:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:09:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:09:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:09:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:09:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:09:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:09:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:09:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:09:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:09:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:09:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:09:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 08:09:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-23 08:09:01,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:01,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540403789] [2023-11-23 08:09:01,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540403789] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:09:01,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385203486] [2023-11-23 08:09:01,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:01,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:01,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:09:01,325 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 08:09:01,344 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 08:09:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:01,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 2603 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:09:01,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:09:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-23 08:09:01,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:09:01,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385203486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:01,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:09:01,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-23 08:09:01,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346655532] [2023-11-23 08:09:01,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:01,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:09:01,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:01,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:09:01,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:09:01,922 INFO L87 Difference]: Start difference. First operand 143 states and 194 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 08:09:02,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:02,246 INFO L93 Difference]: Finished difference Result 275 states and 376 transitions. [2023-11-23 08:09:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:09:02,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 93 [2023-11-23 08:09:02,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:02,249 INFO L225 Difference]: With dead ends: 275 [2023-11-23 08:09:02,249 INFO L226 Difference]: Without dead ends: 145 [2023-11-23 08:09:02,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:09:02,250 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 55 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:02,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 579 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:09:02,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-23 08:09:02,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-23 08:09:02,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 89 states have internal predecessors, (108), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-11-23 08:09:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 198 transitions. [2023-11-23 08:09:02,260 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 198 transitions. Word has length 93 [2023-11-23 08:09:02,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:02,260 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 198 transitions. [2023-11-23 08:09:02,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 08:09:02,261 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 198 transitions. [2023-11-23 08:09:02,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 08:09:02,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:02,262 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2023-11-23 08:09:02,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 08:09:02,482 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 08:09:02,482 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:02,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:02,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1235826072, now seen corresponding path program 1 times [2023-11-23 08:09:02,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:02,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978725720] [2023-11-23 08:09:02,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:02,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:09:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:09:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:09:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:09:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:09:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:09:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:09:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:09:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:09:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:09:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:09:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:09:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-23 08:09:02,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:02,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978725720] [2023-11-23 08:09:02,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978725720] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:09:02,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9938628] [2023-11-23 08:09:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:02,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:02,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:09:02,897 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 08:09:02,911 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 08:09:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:03,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:09:03,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:09:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 76 proven. 14 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:09:03,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:09:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-23 08:09:03,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9938628] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:09:03,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:09:03,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-23 08:09:03,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354386627] [2023-11-23 08:09:03,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:09:03,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:09:03,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:09:03,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:09:03,548 INFO L87 Difference]: Start difference. First operand 145 states and 198 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 7 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) [2023-11-23 08:09:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:04,409 INFO L93 Difference]: Finished difference Result 263 states and 363 transitions. [2023-11-23 08:09:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:09:04,410 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 7 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) Word has length 99 [2023-11-23 08:09:04,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:04,415 INFO L225 Difference]: With dead ends: 263 [2023-11-23 08:09:04,415 INFO L226 Difference]: Without dead ends: 147 [2023-11-23 08:09:04,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:09:04,417 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 239 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:04,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 244 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:09:04,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-23 08:09:04,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-23 08:09:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 91 states have internal predecessors, (109), 44 states have call successors, (44), 12 states have call predecessors, (44), 14 states have return successors, (49), 43 states have call predecessors, (49), 43 states have call successors, (49) [2023-11-23 08:09:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 202 transitions. [2023-11-23 08:09:04,441 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 202 transitions. Word has length 99 [2023-11-23 08:09:04,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:04,442 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 202 transitions. [2023-11-23 08:09:04,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 7 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) [2023-11-23 08:09:04,442 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 202 transitions. [2023-11-23 08:09:04,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 08:09:04,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:04,447 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2023-11-23 08:09:04,468 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 08:09:04,664 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 08:09:04,664 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:04,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1329199949, now seen corresponding path program 1 times [2023-11-23 08:09:04,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:04,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880428172] [2023-11-23 08:09:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:04,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:09:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:09:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:09:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:09:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:09:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:09:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:09:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:09:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:09:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:09:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:09:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:09:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-23 08:09:05,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:05,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880428172] [2023-11-23 08:09:05,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880428172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:09:05,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070561392] [2023-11-23 08:09:05,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:05,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:05,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:09:05,245 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 08:09:05,273 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 08:09:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:05,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 2625 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:09:05,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:09:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 08:09:05,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:09:05,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070561392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:05,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:09:05,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-11-23 08:09:05,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733466194] [2023-11-23 08:09:05,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:05,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:09:05,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:05,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:09:05,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:09:05,744 INFO L87 Difference]: Start difference. First operand 147 states and 202 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:09:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:06,116 INFO L93 Difference]: Finished difference Result 262 states and 359 transitions. [2023-11-23 08:09:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:09:06,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 101 [2023-11-23 08:09:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:06,118 INFO L225 Difference]: With dead ends: 262 [2023-11-23 08:09:06,118 INFO L226 Difference]: Without dead ends: 145 [2023-11-23 08:09:06,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:09:06,119 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 68 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:06,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 721 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:09:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-23 08:09:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-23 08:09:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 89 states have internal predecessors, (107), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-11-23 08:09:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 197 transitions. [2023-11-23 08:09:06,127 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 197 transitions. Word has length 101 [2023-11-23 08:09:06,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:06,127 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 197 transitions. [2023-11-23 08:09:06,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:09:06,128 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 197 transitions. [2023-11-23 08:09:06,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 08:09:06,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:06,129 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 08:09:06,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:09:06,343 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 08:09:06,344 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:06,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:06,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1097776173, now seen corresponding path program 1 times [2023-11-23 08:09:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:06,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243127648] [2023-11-23 08:09:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:06,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:09:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:09:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:09:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:09:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:09:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:09:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:09:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:09:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:09:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:09:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:09:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:09:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 08:09:06,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:06,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243127648] [2023-11-23 08:09:06,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243127648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:06,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:09:06,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:09:06,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909426991] [2023-11-23 08:09:06,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:06,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:09:06,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:06,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:09:06,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:09:06,763 INFO L87 Difference]: Start difference. First operand 145 states and 197 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:09:07,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:07,268 INFO L93 Difference]: Finished difference Result 255 states and 344 transitions. [2023-11-23 08:09:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:09:07,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 113 [2023-11-23 08:09:07,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:07,271 INFO L225 Difference]: With dead ends: 255 [2023-11-23 08:09:07,271 INFO L226 Difference]: Without dead ends: 143 [2023-11-23 08:09:07,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 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 08:09:07,272 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 122 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:07,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 335 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:09:07,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-23 08:09:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-23 08:09:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 86 states have (on average 1.2209302325581395) internal successors, (105), 87 states have internal predecessors, (105), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-23 08:09:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 192 transitions. [2023-11-23 08:09:07,284 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 192 transitions. Word has length 113 [2023-11-23 08:09:07,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:07,286 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 192 transitions. [2023-11-23 08:09:07,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:09:07,286 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 192 transitions. [2023-11-23 08:09:07,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-23 08:09:07,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:07,287 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 08:09:07,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 08:09:07,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:07,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:07,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1701061906, now seen corresponding path program 1 times [2023-11-23 08:09:07,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:07,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156060533] [2023-11-23 08:09:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:07,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:09:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:09:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:09:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:09:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:09:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:09:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:09:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:09:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:09:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:09:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:09:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:09:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-23 08:09:07,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:07,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156060533] [2023-11-23 08:09:07,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156060533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:07,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:09:07,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 08:09:07,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275485942] [2023-11-23 08:09:07,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:07,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:09:07,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:07,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:09:07,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:09:07,983 INFO L87 Difference]: Start difference. First operand 143 states and 192 transitions. Second operand has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 08:09:08,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:08,871 INFO L93 Difference]: Finished difference Result 154 states and 207 transitions. [2023-11-23 08:09:08,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:09:08,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 115 [2023-11-23 08:09:08,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:08,873 INFO L225 Difference]: With dead ends: 154 [2023-11-23 08:09:08,873 INFO L226 Difference]: Without dead ends: 152 [2023-11-23 08:09:08,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:09:08,874 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 86 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:08,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 663 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:09:08,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-23 08:09:08,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2023-11-23 08:09:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 91 states have (on average 1.2087912087912087) internal successors, (110), 93 states have internal predecessors, (110), 45 states have call successors, (45), 13 states have call predecessors, (45), 14 states have return successors, (49), 44 states have call predecessors, (49), 44 states have call successors, (49) [2023-11-23 08:09:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 204 transitions. [2023-11-23 08:09:08,881 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 204 transitions. Word has length 115 [2023-11-23 08:09:08,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:08,881 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 204 transitions. [2023-11-23 08:09:08,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 08:09:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 204 transitions. [2023-11-23 08:09:08,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 08:09:08,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:08,882 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:09:08,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 08:09:08,883 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:08,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:08,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1445731723, now seen corresponding path program 1 times [2023-11-23 08:09:08,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:08,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083667544] [2023-11-23 08:09:08,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:08,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:09:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:09:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:09:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:09:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:09:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:09:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:09:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:09:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:09:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:09:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:09:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:09:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 08:09:09,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:09,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083667544] [2023-11-23 08:09:09,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083667544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:09,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:09:09,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:09:09,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326222821] [2023-11-23 08:09:09,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:09,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:09:09,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:09,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:09:09,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:09:09,211 INFO L87 Difference]: Start difference. First operand 151 states and 204 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 08:09:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:10,076 INFO L93 Difference]: Finished difference Result 230 states and 304 transitions. [2023-11-23 08:09:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:09:10,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 119 [2023-11-23 08:09:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:10,078 INFO L225 Difference]: With dead ends: 230 [2023-11-23 08:09:10,078 INFO L226 Difference]: Without dead ends: 155 [2023-11-23 08:09:10,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:09:10,079 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 62 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:10,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 423 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:09:10,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-23 08:09:10,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-23 08:09:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.202127659574468) internal successors, (113), 96 states have internal predecessors, (113), 45 states have call successors, (45), 13 states have call predecessors, (45), 15 states have return successors, (50), 45 states have call predecessors, (50), 44 states have call successors, (50) [2023-11-23 08:09:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 208 transitions. [2023-11-23 08:09:10,086 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 208 transitions. Word has length 119 [2023-11-23 08:09:10,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:10,087 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 208 transitions. [2023-11-23 08:09:10,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 08:09:10,087 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 208 transitions. [2023-11-23 08:09:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 08:09:10,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:10,088 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 08:09:10,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 08:09:10,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:10,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:10,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1615832666, now seen corresponding path program 1 times [2023-11-23 08:09:10,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:10,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262111814] [2023-11-23 08:09:10,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:10,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:10,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:10,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:09:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:10,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:09:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:10,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:10,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:09:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:09:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:10,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:10,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:10,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:09:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:10,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:09:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:09:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:09:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:09:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:09:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:11,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:09:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:11,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:09:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 08:09:11,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:11,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262111814] [2023-11-23 08:09:11,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262111814] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:09:11,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903322458] [2023-11-23 08:09:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:11,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:11,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:09:11,045 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 08:09:11,047 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 08:09:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:11,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 2676 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-23 08:09:11,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:09:11,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 08:09:11,889 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-23 08:09:11,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-23 08:09:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 118 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 08:09:13,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:09:13,325 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 08:09:13,444 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 08:09:13,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 15 [2023-11-23 08:09:13,619 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 30 treesize of output 24 [2023-11-23 08:09:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-23 08:09:13,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903322458] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:09:13,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:09:13,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 22, 17] total 43 [2023-11-23 08:09:13,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630806523] [2023-11-23 08:09:13,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:09:13,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-23 08:09:13,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:13,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-23 08:09:13,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1648, Unknown=0, NotChecked=0, Total=1806 [2023-11-23 08:09:13,697 INFO L87 Difference]: Start difference. First operand 155 states and 208 transitions. Second operand has 43 states, 40 states have (on average 3.65) internal successors, (146), 39 states have internal predecessors, (146), 15 states have call successors, (46), 5 states have call predecessors, (46), 9 states have return successors, (45), 15 states have call predecessors, (45), 15 states have call successors, (45) [2023-11-23 08:09:23,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:23,053 INFO L93 Difference]: Finished difference Result 786 states and 1110 transitions. [2023-11-23 08:09:23,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-23 08:09:23,054 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 3.65) internal successors, (146), 39 states have internal predecessors, (146), 15 states have call successors, (46), 5 states have call predecessors, (46), 9 states have return successors, (45), 15 states have call predecessors, (45), 15 states have call successors, (45) Word has length 119 [2023-11-23 08:09:23,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:23,057 INFO L225 Difference]: With dead ends: 786 [2023-11-23 08:09:23,058 INFO L226 Difference]: Without dead ends: 687 [2023-11-23 08:09:23,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 240 SyntacticMatches, 22 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5030 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1572, Invalid=14178, Unknown=0, NotChecked=0, Total=15750 [2023-11-23 08:09:23,062 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1206 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 6951 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 7606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 6951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:23,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 2037 Invalid, 7606 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [655 Valid, 6951 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-23 08:09:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-11-23 08:09:23,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 501. [2023-11-23 08:09:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 319 states have (on average 1.2288401253918495) internal successors, (392), 322 states have internal predecessors, (392), 137 states have call successors, (137), 40 states have call predecessors, (137), 44 states have return successors, (166), 138 states have call predecessors, (166), 134 states have call successors, (166) [2023-11-23 08:09:23,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 695 transitions. [2023-11-23 08:09:23,099 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 695 transitions. Word has length 119 [2023-11-23 08:09:23,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:23,100 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 695 transitions. [2023-11-23 08:09:23,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 3.65) internal successors, (146), 39 states have internal predecessors, (146), 15 states have call successors, (46), 5 states have call predecessors, (46), 9 states have return successors, (45), 15 states have call predecessors, (45), 15 states have call successors, (45) [2023-11-23 08:09:23,100 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 695 transitions. [2023-11-23 08:09:23,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 08:09:23,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:23,102 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:09:23,120 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 08:09:23,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:23,316 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:23,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:23,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1297236988, now seen corresponding path program 1 times [2023-11-23 08:09:23,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:23,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966282796] [2023-11-23 08:09:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:23,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:09:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:09:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:09:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:09:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:09:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:09:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:09:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:09:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:09:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:09:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:09:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:09:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:09:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 08:09:23,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:23,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966282796] [2023-11-23 08:09:23,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966282796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:23,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:09:23,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:09:23,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903386896] [2023-11-23 08:09:23,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:23,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:09:23,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:23,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:09:23,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:09:23,592 INFO L87 Difference]: Start difference. First operand 501 states and 695 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 08:09:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:24,184 INFO L93 Difference]: Finished difference Result 770 states and 1053 transitions. [2023-11-23 08:09:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:09:24,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 123 [2023-11-23 08:09:24,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:24,188 INFO L225 Difference]: With dead ends: 770 [2023-11-23 08:09:24,188 INFO L226 Difference]: Without dead ends: 558 [2023-11-23 08:09:24,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 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 08:09:24,191 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 131 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:24,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 343 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:09:24,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-11-23 08:09:24,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 507. [2023-11-23 08:09:24,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 325 states have (on average 1.2246153846153847) internal successors, (398), 328 states have internal predecessors, (398), 137 states have call successors, (137), 40 states have call predecessors, (137), 44 states have return successors, (166), 138 states have call predecessors, (166), 134 states have call successors, (166) [2023-11-23 08:09:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 701 transitions. [2023-11-23 08:09:24,239 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 701 transitions. Word has length 123 [2023-11-23 08:09:24,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:24,240 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 701 transitions. [2023-11-23 08:09:24,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 08:09:24,240 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 701 transitions. [2023-11-23 08:09:24,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-23 08:09:24,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:24,242 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:09:24,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 08:09:24,242 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:24,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:24,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1920765336, now seen corresponding path program 1 times [2023-11-23 08:09:24,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:24,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025950889] [2023-11-23 08:09:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:24,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:09:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:09:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:09:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:09:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:09:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:09:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:09:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:09:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:09:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:09:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:09:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:09:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:09:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-23 08:09:28,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:28,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025950889] [2023-11-23 08:09:28,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025950889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:28,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:09:28,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-11-23 08:09:28,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138432947] [2023-11-23 08:09:28,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:28,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 08:09:28,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:28,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 08:09:28,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2023-11-23 08:09:28,611 INFO L87 Difference]: Start difference. First operand 507 states and 701 transitions. Second operand has 24 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 11 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18) [2023-11-23 08:09:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:32,247 INFO L93 Difference]: Finished difference Result 901 states and 1244 transitions. [2023-11-23 08:09:32,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-23 08:09:32,247 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 11 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18) Word has length 125 [2023-11-23 08:09:32,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:32,250 INFO L225 Difference]: With dead ends: 901 [2023-11-23 08:09:32,251 INFO L226 Difference]: Without dead ends: 686 [2023-11-23 08:09:32,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=259, Invalid=1633, Unknown=0, NotChecked=0, Total=1892 [2023-11-23 08:09:32,252 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 325 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 3082 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 3328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 3082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:32,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 947 Invalid, 3328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 3082 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-23 08:09:32,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-11-23 08:09:32,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 634. [2023-11-23 08:09:32,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 410 states have (on average 1.224390243902439) internal successors, (502), 413 states have internal predecessors, (502), 171 states have call successors, (171), 48 states have call predecessors, (171), 52 states have return successors, (211), 172 states have call predecessors, (211), 168 states have call successors, (211) [2023-11-23 08:09:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 884 transitions. [2023-11-23 08:09:32,303 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 884 transitions. Word has length 125 [2023-11-23 08:09:32,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:32,303 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 884 transitions. [2023-11-23 08:09:32,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 11 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18) [2023-11-23 08:09:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 884 transitions. [2023-11-23 08:09:32,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-23 08:09:32,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:32,305 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:09:32,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 08:09:32,305 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:32,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash -529289767, now seen corresponding path program 1 times [2023-11-23 08:09:32,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:32,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696181059] [2023-11-23 08:09:32,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:32,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:33,304 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 7 [2023-11-23 08:09:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:09:33,317 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 1 [2023-11-23 08:09:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:09:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:09:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:09:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:09:33,420 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 63 [2023-11-23 08:09:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:09:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:09:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:09:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:09:33,447 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 105 [2023-11-23 08:09:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:09:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-11-23 08:09:33,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:33,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696181059] [2023-11-23 08:09:33,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696181059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:09:33,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669420008] [2023-11-23 08:09:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:33,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:33,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:09:33,491 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 08:09:33,492 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 08:09:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 2802 conjuncts, 116 conjunts are in the unsatisfiable core [2023-11-23 08:09:33,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:09:33,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:09:34,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 08:09:34,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:09:34,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2023-11-23 08:09:34,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:09:34,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 08:09:34,607 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 08:09:34,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-23 08:09:34,844 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 08:09:34,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2023-11-23 08:09:34,854 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 08:09:34,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2023-11-23 08:09:37,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:09:37,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:09:37,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:09:37,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:09:37,747 INFO L349 Elim1Store]: treesize reduction 120, result has 22.6 percent of original size [2023-11-23 08:09:37,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 57 treesize of output 83 [2023-11-23 08:09:37,807 INFO L349 Elim1Store]: treesize reduction 120, result has 14.9 percent of original size [2023-11-23 08:09:37,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 80 [2023-11-23 08:09:38,268 INFO L349 Elim1Store]: treesize reduction 24, result has 65.2 percent of original size [2023-11-23 08:09:38,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 57 [2023-11-23 08:09:38,333 INFO L349 Elim1Store]: treesize reduction 24, result has 65.2 percent of original size [2023-11-23 08:09:38,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 60 [2023-11-23 08:09:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 41 proven. 78 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 08:09:38,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:10:19,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669420008] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:10:19,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:10:19,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 33] total 44 [2023-11-23 08:10:19,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075291502] [2023-11-23 08:10:19,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:10:19,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-23 08:10:19,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:10:19,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-23 08:10:19,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2382, Unknown=13, NotChecked=0, Total=2550 [2023-11-23 08:10:19,326 INFO L87 Difference]: Start difference. First operand 634 states and 884 transitions. Second operand has 44 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 37 states have internal predecessors, (136), 17 states have call successors, (40), 13 states have call predecessors, (40), 11 states have return successors, (36), 14 states have call predecessors, (36), 15 states have call successors, (36) [2023-11-23 08:10:33,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:35,527 WARN L539 Checker$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 08:10:41,753 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 08:10:48,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:10:48,957 INFO L93 Difference]: Finished difference Result 1047 states and 1451 transitions. [2023-11-23 08:10:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-11-23 08:10:48,958 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 37 states have internal predecessors, (136), 17 states have call successors, (40), 13 states have call predecessors, (40), 11 states have return successors, (36), 14 states have call predecessors, (36), 15 states have call successors, (36) Word has length 127 [2023-11-23 08:10:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:10:48,961 INFO L225 Difference]: With dead ends: 1047 [2023-11-23 08:10:48,961 INFO L226 Difference]: Without dead ends: 940 [2023-11-23 08:10:48,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 139 SyntacticMatches, 19 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6535 ImplicationChecksByTransitivity, 50.3s TimeCoverageRelationStatistics Valid=2270, Invalid=19473, Unknown=13, NotChecked=0, Total=21756 [2023-11-23 08:10:48,966 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 1236 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 7747 mSolverCounterSat, 1234 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 8984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1234 IncrementalHoareTripleChecker+Valid, 7747 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:10:48,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1609 Invalid, 8984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1234 Valid, 7747 Invalid, 3 Unknown, 0 Unchecked, 21.1s Time] [2023-11-23 08:10:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2023-11-23 08:10:49,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 726. [2023-11-23 08:10:49,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 479 states have (on average 1.2233820459290188) internal successors, (586), 483 states have internal predecessors, (586), 187 states have call successors, (187), 55 states have call predecessors, (187), 59 states have return successors, (226), 187 states have call predecessors, (226), 183 states have call successors, (226) [2023-11-23 08:10:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 999 transitions. [2023-11-23 08:10:49,064 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 999 transitions. Word has length 127 [2023-11-23 08:10:49,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:10:49,065 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 999 transitions. [2023-11-23 08:10:49,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 37 states have internal predecessors, (136), 17 states have call successors, (40), 13 states have call predecessors, (40), 11 states have return successors, (36), 14 states have call predecessors, (36), 15 states have call successors, (36) [2023-11-23 08:10:49,065 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 999 transitions. [2023-11-23 08:10:49,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 08:10:49,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:10:49,067 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:10:49,089 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 08:10:49,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 08:10:49,285 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:10:49,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:10:49,285 INFO L85 PathProgramCache]: Analyzing trace with hash -833130966, now seen corresponding path program 1 times [2023-11-23 08:10:49,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:10:49,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832692868] [2023-11-23 08:10:49,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:49,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:10:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:10:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:10:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:10:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:10:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:10:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:10:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:10:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:10:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:10:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:10:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:10:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:10:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:10:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:10:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:10:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-23 08:10:49,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:10:49,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832692868] [2023-11-23 08:10:49,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832692868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:10:49,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:10:49,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 08:10:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40175826] [2023-11-23 08:10:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:10:49,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 08:10:49,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:10:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 08:10:49,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:10:49,858 INFO L87 Difference]: Start difference. First operand 726 states and 999 transitions. Second operand has 10 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 08:10:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:10:50,968 INFO L93 Difference]: Finished difference Result 754 states and 1030 transitions. [2023-11-23 08:10:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:10:50,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 128 [2023-11-23 08:10:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:10:50,972 INFO L225 Difference]: With dead ends: 754 [2023-11-23 08:10:50,972 INFO L226 Difference]: Without dead ends: 752 [2023-11-23 08:10:50,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:10:50,973 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 144 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:10:50,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 650 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:10:50,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2023-11-23 08:10:51,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 742. [2023-11-23 08:10:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 488 states have (on average 1.2192622950819672) internal successors, (595), 492 states have internal predecessors, (595), 191 states have call successors, (191), 58 states have call predecessors, (191), 62 states have return successors, (230), 191 states have call predecessors, (230), 187 states have call successors, (230) [2023-11-23 08:10:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1016 transitions. [2023-11-23 08:10:51,058 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1016 transitions. Word has length 128 [2023-11-23 08:10:51,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:10:51,058 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 1016 transitions. [2023-11-23 08:10:51,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 08:10:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1016 transitions. [2023-11-23 08:10:51,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-23 08:10:51,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:10:51,060 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:10:51,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 08:10:51,061 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:10:51,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:10:51,061 INFO L85 PathProgramCache]: Analyzing trace with hash -525657808, now seen corresponding path program 1 times [2023-11-23 08:10:51,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:10:51,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497924885] [2023-11-23 08:10:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:51,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:10:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:10:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:10:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:10:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:10:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:10:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:10:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:10:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:10:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:10:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:10:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 08:10:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:10:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:10:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:10:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:10:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-23 08:10:51,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:10:51,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497924885] [2023-11-23 08:10:51,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497924885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:10:51,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:10:51,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:10:51,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425899623] [2023-11-23 08:10:51,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:10:51,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:10:51,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:10:51,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:10:51,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:10:51,756 INFO L87 Difference]: Start difference. First operand 742 states and 1016 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 08:10:52,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:10:52,834 INFO L93 Difference]: Finished difference Result 1612 states and 2252 transitions. [2023-11-23 08:10:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:10:52,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 129 [2023-11-23 08:10:52,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:10:52,840 INFO L225 Difference]: With dead ends: 1612 [2023-11-23 08:10:52,840 INFO L226 Difference]: Without dead ends: 897 [2023-11-23 08:10:52,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:10:52,845 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 286 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:10:52,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 343 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:10:52,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-11-23 08:10:52,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 777. [2023-11-23 08:10:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 523 states have (on average 1.231357552581262) internal successors, (644), 527 states have internal predecessors, (644), 191 states have call successors, (191), 58 states have call predecessors, (191), 62 states have return successors, (230), 191 states have call predecessors, (230), 187 states have call successors, (230) [2023-11-23 08:10:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1065 transitions. [2023-11-23 08:10:52,932 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1065 transitions. Word has length 129 [2023-11-23 08:10:52,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:10:52,933 INFO L495 AbstractCegarLoop]: Abstraction has 777 states and 1065 transitions. [2023-11-23 08:10:52,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 08:10:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1065 transitions. [2023-11-23 08:10:52,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-23 08:10:52,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:10:52,934 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:10:52,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 08:10:52,935 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:10:52,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:10:52,935 INFO L85 PathProgramCache]: Analyzing trace with hash -91928722, now seen corresponding path program 1 times [2023-11-23 08:10:52,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:10:52,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417643687] [2023-11-23 08:10:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:52,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:10:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:10:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:10:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:10:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:10:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:10:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:10:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:10:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:10:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:10:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:10:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 08:10:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:10:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:10:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:10:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:10:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:53,563 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-23 08:10:53,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:10:53,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417643687] [2023-11-23 08:10:53,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417643687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:10:53,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501668825] [2023-11-23 08:10:53,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:53,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:10:53,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:10:53,565 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 08:10:53,565 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 08:10:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:54,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 2788 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-23 08:10:54,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:10:54,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:10:54,136 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 08:10:54,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-23 08:10:54,369 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 08:10:54,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-23 08:10:54,472 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 08:10:54,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-23 08:10:54,478 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 08:10:54,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-23 08:10:54,684 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 08:10:54,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2023-11-23 08:10:54,688 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 08:10:54,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2023-11-23 08:10:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 7 proven. 56 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-23 08:10:54,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:11:11,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501668825] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:11:11,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:11:11,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21] total 31 [2023-11-23 08:11:11,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946684125] [2023-11-23 08:11:11,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:11:11,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 08:11:11,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:11:11,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 08:11:11,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1305, Unknown=1, NotChecked=0, Total=1406 [2023-11-23 08:11:11,589 INFO L87 Difference]: Start difference. First operand 777 states and 1065 transitions. Second operand has 31 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 12 states have call successors, (40), 10 states have call predecessors, (40), 8 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) [2023-11-23 08:11:15,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:19,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:11:19,684 INFO L93 Difference]: Finished difference Result 1439 states and 1952 transitions. [2023-11-23 08:11:19,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-23 08:11:19,685 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 12 states have call successors, (40), 10 states have call predecessors, (40), 8 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) Word has length 129 [2023-11-23 08:11:19,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:11:19,691 INFO L225 Difference]: With dead ends: 1439 [2023-11-23 08:11:19,691 INFO L226 Difference]: Without dead ends: 879 [2023-11-23 08:11:19,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 142 SyntacticMatches, 15 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=405, Invalid=3626, Unknown=1, NotChecked=0, Total=4032 [2023-11-23 08:11:19,694 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 562 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 3488 mSolverCounterSat, 528 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 4017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 3488 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:11:19,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1289 Invalid, 4017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 3488 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2023-11-23 08:11:19,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-11-23 08:11:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 806. [2023-11-23 08:11:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 541 states have (on average 1.2255083179297597) internal successors, (663), 547 states have internal predecessors, (663), 195 states have call successors, (195), 63 states have call predecessors, (195), 69 states have return successors, (243), 195 states have call predecessors, (243), 191 states have call successors, (243) [2023-11-23 08:11:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1101 transitions. [2023-11-23 08:11:19,787 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1101 transitions. Word has length 129 [2023-11-23 08:11:19,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:11:19,787 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1101 transitions. [2023-11-23 08:11:19,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 12 states have call successors, (40), 10 states have call predecessors, (40), 8 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) [2023-11-23 08:11:19,787 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1101 transitions. [2023-11-23 08:11:19,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-23 08:11:19,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:11:19,789 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:11:19,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:11:20,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:11:20,007 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:11:20,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:11:20,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1474020694, now seen corresponding path program 1 times [2023-11-23 08:11:20,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:11:20,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851723366] [2023-11-23 08:11:20,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:11:20,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:11:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:11:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:11:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:11:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:11:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:11:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:11:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:11:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:11:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:11:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:11:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:11:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:11:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 08:11:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:11:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:11:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:20,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 08:11:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-11-23 08:11:21,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:11:21,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851723366] [2023-11-23 08:11:21,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851723366] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:11:21,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242985327] [2023-11-23 08:11:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:11:21,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:11:21,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:11:21,141 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 08:11:21,143 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 08:11:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:21,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-23 08:11:21,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:11:21,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:11:21,761 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:11:21,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-23 08:11:21,801 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 08:11:22,266 INFO L349 Elim1Store]: treesize reduction 9, result has 64.0 percent of original size [2023-11-23 08:11:22,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 48 [2023-11-23 08:11:26,538 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 30 treesize of output 23 [2023-11-23 08:11:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 102 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 08:11:33,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:11:33,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242985327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:11:33,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:11:33,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 30 [2023-11-23 08:11:33,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173860261] [2023-11-23 08:11:33,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:11:33,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-23 08:11:33,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:11:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-23 08:11:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1062, Unknown=14, NotChecked=0, Total=1190 [2023-11-23 08:11:33,402 INFO L87 Difference]: Start difference. First operand 806 states and 1101 transitions. Second operand has 30 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 11 states have call successors, (33), 7 states have call predecessors, (33), 9 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-23 08:11:37,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:40,016 WARN L539 Checker$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 08:11:44,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:51,380 WARN L539 Checker$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 08:11:54,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:00,451 WARN L539 Checker$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 08:12:02,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:04,514 WARN L539 Checker$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 08:12:06,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:08,793 WARN L539 Checker$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 08:12:10,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:12,916 WARN L539 Checker$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 08:12:15,147 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 08:12:16,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:16,311 INFO L93 Difference]: Finished difference Result 1836 states and 2550 transitions. [2023-11-23 08:12:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-11-23 08:12:16,311 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 11 states have call successors, (33), 7 states have call predecessors, (33), 9 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) Word has length 127 [2023-11-23 08:12:16,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:16,315 INFO L225 Difference]: With dead ends: 1836 [2023-11-23 08:12:16,315 INFO L226 Difference]: Without dead ends: 1059 [2023-11-23 08:12:16,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 233 SyntacticMatches, 14 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4658 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=2172, Invalid=11849, Unknown=21, NotChecked=0, Total=14042 [2023-11-23 08:12:16,323 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 2282 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 4633 mSolverCounterSat, 996 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 5642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 996 IncrementalHoareTripleChecker+Valid, 4633 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:16,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2300 Valid, 1376 Invalid, 5642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [996 Valid, 4633 Invalid, 13 Unknown, 0 Unchecked, 34.0s Time] [2023-11-23 08:12:16,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2023-11-23 08:12:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 743. [2023-11-23 08:12:16,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 508 states have (on average 1.2283464566929134) internal successors, (624), 518 states have internal predecessors, (624), 167 states have call successors, (167), 59 states have call predecessors, (167), 67 states have return successors, (216), 165 states have call predecessors, (216), 163 states have call successors, (216) [2023-11-23 08:12:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1007 transitions. [2023-11-23 08:12:16,427 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1007 transitions. Word has length 127 [2023-11-23 08:12:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:16,427 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 1007 transitions. [2023-11-23 08:12:16,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 11 states have call successors, (33), 7 states have call predecessors, (33), 9 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-23 08:12:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1007 transitions. [2023-11-23 08:12:16,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 08:12:16,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:16,430 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:12:16,450 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 08:12:16,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:16,649 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:16,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1111499235, now seen corresponding path program 1 times [2023-11-23 08:12:16,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:16,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770935705] [2023-11-23 08:12:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:16,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:12:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:12:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:12:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:12:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:12:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:12:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:12:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:12:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:12:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:12:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:12:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:12:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:12:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:12:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-23 08:12:16,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:12:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770935705] [2023-11-23 08:12:16,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770935705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:12:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243704501] [2023-11-23 08:12:16,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:16,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:16,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:12:16,884 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 08:12:16,888 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 08:12:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:17,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:12:17,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:12:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 08:12:17,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:12:17,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243704501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:12:17,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:12:17,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 08:12:17,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898120658] [2023-11-23 08:12:17,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:12:17,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:12:17,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:12:17,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:12:17,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:12:17,283 INFO L87 Difference]: Start difference. First operand 743 states and 1007 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:12:17,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:17,616 INFO L93 Difference]: Finished difference Result 1500 states and 2059 transitions. [2023-11-23 08:12:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:12:17,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 137 [2023-11-23 08:12:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:17,620 INFO L225 Difference]: With dead ends: 1500 [2023-11-23 08:12:17,620 INFO L226 Difference]: Without dead ends: 795 [2023-11-23 08:12:17,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:12:17,623 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 9 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:17,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 521 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:12:17,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-11-23 08:12:17,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 759. [2023-11-23 08:12:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 524 states have (on average 1.2213740458015268) internal successors, (640), 534 states have internal predecessors, (640), 167 states have call successors, (167), 59 states have call predecessors, (167), 67 states have return successors, (216), 165 states have call predecessors, (216), 163 states have call successors, (216) [2023-11-23 08:12:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1023 transitions. [2023-11-23 08:12:17,725 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1023 transitions. Word has length 137 [2023-11-23 08:12:17,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:17,725 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1023 transitions. [2023-11-23 08:12:17,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:12:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1023 transitions. [2023-11-23 08:12:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 08:12:17,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:17,727 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:12:17,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 08:12:17,940 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,SelfDestructingSolverStorable15 [2023-11-23 08:12:17,940 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:17,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:17,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1962624927, now seen corresponding path program 1 times [2023-11-23 08:12:17,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:17,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201248945] [2023-11-23 08:12:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:17,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:12:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:12:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:12:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:12:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:12:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:12:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:12:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:12:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:12:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:12:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:12:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:12:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:12:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:12:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-23 08:12:18,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:12:18,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201248945] [2023-11-23 08:12:18,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201248945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:12:18,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799159495] [2023-11-23 08:12:18,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:18,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:18,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:12:18,164 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 08:12:18,179 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 08:12:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:18,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:12:18,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:12:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 08:12:18,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:12:18,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799159495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:12:18,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:12:18,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 08:12:18,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848197901] [2023-11-23 08:12:18,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:12:18,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:12:18,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:12:18,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:12:18,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:12:18,596 INFO L87 Difference]: Start difference. First operand 759 states and 1023 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:12:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:18,980 INFO L93 Difference]: Finished difference Result 1505 states and 2024 transitions. [2023-11-23 08:12:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:12:18,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 137 [2023-11-23 08:12:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:18,983 INFO L225 Difference]: With dead ends: 1505 [2023-11-23 08:12:18,983 INFO L226 Difference]: Without dead ends: 779 [2023-11-23 08:12:18,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:12:18,986 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 28 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:18,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 537 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:12:18,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-11-23 08:12:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 687. [2023-11-23 08:12:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 466 states have (on average 1.201716738197425) internal successors, (560), 474 states have internal predecessors, (560), 157 states have call successors, (157), 57 states have call predecessors, (157), 63 states have return successors, (182), 155 states have call predecessors, (182), 153 states have call successors, (182) [2023-11-23 08:12:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 899 transitions. [2023-11-23 08:12:19,065 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 899 transitions. Word has length 137 [2023-11-23 08:12:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:19,066 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 899 transitions. [2023-11-23 08:12:19,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:12:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 899 transitions. [2023-11-23 08:12:19,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 08:12:19,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:19,067 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:12:19,082 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 08:12:19,267 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,SelfDestructingSolverStorable16 [2023-11-23 08:12:19,268 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:19,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1050269, now seen corresponding path program 1 times [2023-11-23 08:12:19,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:19,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445699740] [2023-11-23 08:12:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:19,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:12:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:12:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:12:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:12:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:12:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:12:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:12:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:12:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:12:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:12:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:12:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:12:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:12:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:12:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-23 08:12:19,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:12:19,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445699740] [2023-11-23 08:12:19,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445699740] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:12:19,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337203935] [2023-11-23 08:12:19,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:19,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:19,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:12:19,819 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 08:12:19,842 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 08:12:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:20,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:12:20,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:12:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 08:12:20,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:12:20,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337203935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:12:20,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:12:20,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-23 08:12:20,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252558254] [2023-11-23 08:12:20,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:12:20,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:12:20,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:12:20,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:12:20,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:12:20,263 INFO L87 Difference]: Start difference. First operand 687 states and 899 transitions. Second operand has 9 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 08:12:20,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:20,900 INFO L93 Difference]: Finished difference Result 1344 states and 1762 transitions. [2023-11-23 08:12:20,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:12:20,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2023-11-23 08:12:20,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:20,904 INFO L225 Difference]: With dead ends: 1344 [2023-11-23 08:12:20,904 INFO L226 Difference]: Without dead ends: 692 [2023-11-23 08:12:20,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:12:20,906 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 13 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:20,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1306 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:12:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2023-11-23 08:12:20,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 680. [2023-11-23 08:12:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 459 states have (on average 1.196078431372549) internal successors, (549), 467 states have internal predecessors, (549), 157 states have call successors, (157), 57 states have call predecessors, (157), 63 states have return successors, (182), 155 states have call predecessors, (182), 153 states have call successors, (182) [2023-11-23 08:12:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 888 transitions. [2023-11-23 08:12:20,988 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 888 transitions. Word has length 137 [2023-11-23 08:12:20,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:20,989 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 888 transitions. [2023-11-23 08:12:20,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 08:12:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 888 transitions. [2023-11-23 08:12:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 08:12:20,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:20,990 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:21,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 08:12:21,196 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,SelfDestructingSolverStorable17 [2023-11-23 08:12:21,196 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:21,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash -629479176, now seen corresponding path program 2 times [2023-11-23 08:12:21,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:21,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799575916] [2023-11-23 08:12:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:21,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:12:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:12:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:12:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:12:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:12:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:12:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:12:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:12:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:12:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:12:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:12:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:12:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:12:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 08:12:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-11-23 08:12:21,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:12:21,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799575916] [2023-11-23 08:12:21,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799575916] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:12:21,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135417233] [2023-11-23 08:12:21,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:12:21,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:21,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:12:21,783 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 08:12:21,784 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 08:12:22,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:12:22,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:12:22,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:12:22,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:12:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 08:12:22,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:12:22,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135417233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:12:22,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:12:22,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2023-11-23 08:12:22,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434154658] [2023-11-23 08:12:22,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:12:22,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:12:22,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:12:22,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:12:22,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:12:22,401 INFO L87 Difference]: Start difference. First operand 680 states and 888 transitions. Second operand has 9 states, 7 states have (on average 10.0) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 08:12:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:23,396 INFO L93 Difference]: Finished difference Result 1281 states and 1672 transitions. [2023-11-23 08:12:23,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:12:23,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.0) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2023-11-23 08:12:23,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:23,401 INFO L225 Difference]: With dead ends: 1281 [2023-11-23 08:12:23,401 INFO L226 Difference]: Without dead ends: 696 [2023-11-23 08:12:23,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:12:23,403 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 13 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:23,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1324 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:12:23,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-11-23 08:12:23,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 688. [2023-11-23 08:12:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 465 states have (on average 1.189247311827957) internal successors, (553), 475 states have internal predecessors, (553), 157 states have call successors, (157), 57 states have call predecessors, (157), 65 states have return successors, (191), 155 states have call predecessors, (191), 153 states have call successors, (191) [2023-11-23 08:12:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 901 transitions. [2023-11-23 08:12:23,506 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 901 transitions. Word has length 139 [2023-11-23 08:12:23,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:23,507 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 901 transitions. [2023-11-23 08:12:23,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.0) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 08:12:23,507 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 901 transitions. [2023-11-23 08:12:23,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 08:12:23,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:23,509 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:12:23,524 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 08:12:23,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:23,719 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:23,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:23,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1516870195, now seen corresponding path program 1 times [2023-11-23 08:12:23,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:23,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886024068] [2023-11-23 08:12:23,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:23,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:12:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:12:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:12:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:12:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:12:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:12:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:12:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:12:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:12:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:12:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:12:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:12:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:12:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 08:12:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-11-23 08:12:24,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:12:24,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886024068] [2023-11-23 08:12:24,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886024068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:12:24,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245375420] [2023-11-23 08:12:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:24,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:24,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:12:24,336 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:12:24,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 08:12:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:24,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-23 08:12:24,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:12:24,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 08:12:24,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 08:12:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-23 08:12:25,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:12:25,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245375420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:12:25,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:12:25,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2023-11-23 08:12:25,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077060350] [2023-11-23 08:12:25,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:12:25,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:12:25,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:12:25,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:12:25,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:12:25,512 INFO L87 Difference]: Start difference. First operand 688 states and 901 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-23 08:12:28,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:28,630 INFO L93 Difference]: Finished difference Result 1111 states and 1454 transitions. [2023-11-23 08:12:28,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:12:28,631 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 141 [2023-11-23 08:12:28,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:28,633 INFO L225 Difference]: With dead ends: 1111 [2023-11-23 08:12:28,634 INFO L226 Difference]: Without dead ends: 724 [2023-11-23 08:12:28,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 155 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2023-11-23 08:12:28,636 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 164 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:28,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1299 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-23 08:12:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2023-11-23 08:12:28,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 699. [2023-11-23 08:12:28,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 473 states have (on average 1.1881606765327695) internal successors, (562), 484 states have internal predecessors, (562), 159 states have call successors, (159), 57 states have call predecessors, (159), 66 states have return successors, (197), 157 states have call predecessors, (197), 155 states have call successors, (197) [2023-11-23 08:12:28,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 918 transitions. [2023-11-23 08:12:28,731 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 918 transitions. Word has length 141 [2023-11-23 08:12:28,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:28,733 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 918 transitions. [2023-11-23 08:12:28,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-23 08:12:28,733 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 918 transitions. [2023-11-23 08:12:28,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 08:12:28,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:28,736 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:12:28,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 08:12:28,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:28,953 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:28,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:28,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1940516917, now seen corresponding path program 1 times [2023-11-23 08:12:28,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:28,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565009549] [2023-11-23 08:12:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:28,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:12:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:12:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:12:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:12:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:12:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:12:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:12:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:12:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:12:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:12:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:12:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:12:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:12:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 08:12:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-23 08:12:29,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:12:29,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565009549] [2023-11-23 08:12:29,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565009549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:12:29,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:12:29,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:12:29,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027587974] [2023-11-23 08:12:29,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:12:29,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:12:29,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:12:29,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:12:29,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:12:29,168 INFO L87 Difference]: Start difference. First operand 699 states and 918 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:12:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:29,854 INFO L93 Difference]: Finished difference Result 1301 states and 1709 transitions. [2023-11-23 08:12:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:12:29,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2023-11-23 08:12:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:29,857 INFO L225 Difference]: With dead ends: 1301 [2023-11-23 08:12:29,857 INFO L226 Difference]: Without dead ends: 682 [2023-11-23 08:12:29,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:12:29,859 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 68 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:29,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 334 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:12:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-23 08:12:29,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 664. [2023-11-23 08:12:29,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 453 states have (on average 1.1788079470198676) internal successors, (534), 463 states have internal predecessors, (534), 146 states have call successors, (146), 56 states have call predecessors, (146), 64 states have return successors, (174), 144 states have call predecessors, (174), 142 states have call successors, (174) [2023-11-23 08:12:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 854 transitions. [2023-11-23 08:12:29,938 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 854 transitions. Word has length 141 [2023-11-23 08:12:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:29,938 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 854 transitions. [2023-11-23 08:12:29,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:12:29,939 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 854 transitions. [2023-11-23 08:12:29,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-23 08:12:29,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:29,940 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:12:29,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 08:12:29,940 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:29,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:29,941 INFO L85 PathProgramCache]: Analyzing trace with hash -473060103, now seen corresponding path program 1 times [2023-11-23 08:12:29,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:29,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934297814] [2023-11-23 08:12:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:29,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:12:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:12:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:12:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:12:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:12:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:12:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:12:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:12:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:12:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:12:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:12:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:12:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:12:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:12:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:12:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 08:12:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:32,969 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 08:12:32,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:12:32,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934297814] [2023-11-23 08:12:32,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934297814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:12:32,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:12:32,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-23 08:12:32,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363342124] [2023-11-23 08:12:32,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:12:32,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 08:12:32,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:12:32,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 08:12:32,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2023-11-23 08:12:32,971 INFO L87 Difference]: Start difference. First operand 664 states and 854 transitions. Second operand has 23 states, 20 states have (on average 3.15) internal successors, (63), 18 states have internal predecessors, (63), 10 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2023-11-23 08:12:37,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:37,398 INFO L93 Difference]: Finished difference Result 1178 states and 1674 transitions. [2023-11-23 08:12:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-23 08:12:37,401 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 3.15) internal successors, (63), 18 states have internal predecessors, (63), 10 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) Word has length 146 [2023-11-23 08:12:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:37,405 INFO L225 Difference]: With dead ends: 1178 [2023-11-23 08:12:37,405 INFO L226 Difference]: Without dead ends: 1176 [2023-11-23 08:12:37,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=1203, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 08:12:37,413 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 433 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 2899 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:37,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1247 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 2899 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-23 08:12:37,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2023-11-23 08:12:37,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 948. [2023-11-23 08:12:37,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 640 states have (on average 1.18125) internal successors, (756), 656 states have internal predecessors, (756), 232 states have call successors, (232), 62 states have call predecessors, (232), 75 states have return successors, (312), 229 states have call predecessors, (312), 228 states have call successors, (312) [2023-11-23 08:12:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1300 transitions. [2023-11-23 08:12:37,551 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1300 transitions. Word has length 146 [2023-11-23 08:12:37,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:37,551 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1300 transitions. [2023-11-23 08:12:37,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 3.15) internal successors, (63), 18 states have internal predecessors, (63), 10 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2023-11-23 08:12:37,551 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1300 transitions. [2023-11-23 08:12:37,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-23 08:12:37,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:37,554 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:12:37,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 08:12:37,554 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:37,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:37,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1205027529, now seen corresponding path program 1 times [2023-11-23 08:12:37,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:37,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804096427] [2023-11-23 08:12:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:37,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:12:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:12:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:12:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:12:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:12:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:12:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:12:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:12:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:12:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:12:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:12:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:12:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:12:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:39,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:12:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:40,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:40,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:12:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:40,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 08:12:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-23 08:12:40,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:12:40,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804096427] [2023-11-23 08:12:40,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804096427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:12:40,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948345702] [2023-11-23 08:12:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:40,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:40,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:12:40,037 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:12:40,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 08:12:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:40,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-23 08:12:40,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:12:40,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:12:40,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 08:12:40,702 WARN L876 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (<= (+ |bounded_malloc_#res.base| 1) |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| (select |c_#valid| |bounded_malloc_#res.base|))))) is different from true [2023-11-23 08:12:40,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:12:40,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2023-11-23 08:12:41,240 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-23 08:12:41,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-23 08:12:43,291 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_55| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_78| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_23| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_23| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_78|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_55|) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_23|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_23|)) (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_23| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_78|)))) is different from true [2023-11-23 08:12:45,406 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_79| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_24| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_24| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_56| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_24|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_24|) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_79|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_56|)) (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_24| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_79|)))) is different from true [2023-11-23 08:12:45,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-23 08:12:47,531 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_25| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_25| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_80| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_57| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_25| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_80|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_80|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_57|) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_25|)))) is different from true [2023-11-23 08:12:49,634 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_26| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_26| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_58| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_81| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_26| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_81|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_26|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_26|) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_81|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_58|)))) is different from true [2023-11-23 08:12:51,710 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_27| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_59| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_27| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_82| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_27| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_82|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_27|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_27|) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_82|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_59|)))) is different from true [2023-11-23 08:12:53,832 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_60| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_83| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_28| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_28| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_28| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_83|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_83|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_60|) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_28|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_28|)))) is different from true [2023-11-23 08:12:55,912 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_61| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_29| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_84| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_29| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_29| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_84|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_29|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_29|) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_84|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_61|)))) is different from true [2023-11-23 08:12:58,020 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_30| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_62| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_30| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_85| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_30| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_85|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_85|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_62|) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_30|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_30|)))) is different from true [2023-11-23 08:13:00,107 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_63| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_86| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_31| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_86|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_86|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.offset_BEFORE_CALL_63|) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_31|) |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_31|)))) is different from true Killed by 15