./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_array_eq_ignore_case_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_array_eq_ignore_case_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 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:54:18,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:54:18,790 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:54:18,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:54:18,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:54:18,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:54:18,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:54:18,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:54:18,821 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:54:18,824 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:54:18,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:54:18,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:54:18,825 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:54:18,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:54:18,827 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:54:18,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:54:18,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:54:18,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:54:18,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:54:18,828 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:54:18,828 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:54:18,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:54:18,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:54:18,829 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:54:18,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:54:18,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:54:18,830 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:54:18,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:54:18,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:54:18,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:54:18,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:54:18,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:54:18,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:54:18,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:54:18,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:54:18,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:54:18,832 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:54:18,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:54:18,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:54:18,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 07:54:19,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:54:19,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:54:19,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:54:19,112 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:54:19,113 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:54:19,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_array_eq_ignore_case_harness.i [2023-11-23 07:54:20,150 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:54:20,867 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:54:20,867 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_eq_ignore_case_harness.i [2023-11-23 07:54:20,918 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eea8f285f/b786e4fd5b9e4efc89aa6edbca618587/FLAG0b2a3f4a8 [2023-11-23 07:54:20,932 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eea8f285f/b786e4fd5b9e4efc89aa6edbca618587 [2023-11-23 07:54:20,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:54:20,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:54:20,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:54:20,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:54:20,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:54:20,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:54:20" (1/1) ... [2023-11-23 07:54:20,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eae05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:20, skipping insertion in model container [2023-11-23 07:54:20,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:54:20" (1/1) ... [2023-11-23 07:54:21,130 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:54:21,572 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2023-11-23 07:54:21,581 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2023-11-23 07:54:23,121 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:23,123 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:23,123 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:23,124 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:23,125 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:23,152 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:23,153 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:23,154 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:23,155 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:23,549 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:54:23,550 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:54:23,551 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:54:23,553 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:54:23,557 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:54:23,557 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:54:23,558 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:54:23,559 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:54:23,560 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:54:23,563 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:54:23,806 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:23,807 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:23,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:54:24,006 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:54:24,016 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2023-11-23 07:54:24,017 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2023-11-23 07:54:24,040 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:24,041 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:24,041 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:24,041 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:24,042 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:24,046 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:24,046 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:24,047 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:24,047 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:24,069 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:54:24,070 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:54:24,070 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:54:24,071 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:54:24,072 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:54:24,074 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:54:24,075 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:54:24,075 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:54:24,076 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:54:24,076 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:54:24,175 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-23 07:54:24,177 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:24,177 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:54:24,195 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-23 07:54:24,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:54:24,354 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,355 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,355 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,355 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,355 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,355 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,356 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,356 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,356 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,356 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,357 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,357 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,357 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,357 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,357 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,358 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,358 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,358 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:54:24,364 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:54:24,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:24 WrapperNode [2023-11-23 07:54:24,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:54:24,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:54:24,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:54:24,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:54:24,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:24" (1/1) ... [2023-11-23 07:54:24,489 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:24" (1/1) ... [2023-11-23 07:54:24,551 INFO L138 Inliner]: procedures = 690, calls = 2618, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 775 [2023-11-23 07:54:24,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:54:24,552 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:54:24,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:54:24,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:54:24,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:24" (1/1) ... [2023-11-23 07:54:24,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:24" (1/1) ... [2023-11-23 07:54:24,565 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:24" (1/1) ... [2023-11-23 07:54:24,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:24" (1/1) ... [2023-11-23 07:54:24,593 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:24" (1/1) ... [2023-11-23 07:54:24,604 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:24" (1/1) ... [2023-11-23 07:54:24,608 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:24" (1/1) ... [2023-11-23 07:54:24,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:24" (1/1) ... [2023-11-23 07:54:24,633 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:54:24,634 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:54:24,634 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:54:24,634 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:54:24,635 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:24" (1/1) ... [2023-11-23 07:54:24,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:54:24,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:54:24,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 07:54:24,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 07:54:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2023-11-23 07:54:24,719 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2023-11-23 07:54:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:54:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:54:24,720 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:54:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 07:54:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:54:24,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:54:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:54:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:54:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 07:54:24,720 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 07:54:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:54:24,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:54:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:54:24,722 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:54:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 07:54:24,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 07:54:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 07:54:24,722 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 07:54:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:54:24,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:54:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:54:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 07:54:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 07:54:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 07:54:24,928 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:54:24,930 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:54:25,506 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:54:25,590 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:54:25,590 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 07:54:25,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:54:25 BoogieIcfgContainer [2023-11-23 07:54:25,591 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:54:25,592 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:54:25,592 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:54:25,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:54:25,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:54:20" (1/3) ... [2023-11-23 07:54:25,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396f3bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:54:25, skipping insertion in model container [2023-11-23 07:54:25,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:24" (2/3) ... [2023-11-23 07:54:25,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396f3bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:54:25, skipping insertion in model container [2023-11-23 07:54:25,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:54:25" (3/3) ... [2023-11-23 07:54:25,599 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_eq_ignore_case_harness.i [2023-11-23 07:54:25,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:54:25,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:54:25,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:54:25,664 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;@6c02882b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:54:25,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:54:25,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 07:54:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 07:54:25,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:54:25,680 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 07:54:25,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:54:25,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:54:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1244814878, now seen corresponding path program 1 times [2023-11-23 07:54:25,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:54:25,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703369436] [2023-11-23 07:54:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:25,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:54:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:26,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:26,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:26,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:26,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:54:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:26,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:54:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:26,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 07:54:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:26,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 07:54:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:26,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:54:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:26,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:54:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 07:54:26,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:54:26,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703369436] [2023-11-23 07:54:26,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703369436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:54:26,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:54:26,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:54:26,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471744673] [2023-11-23 07:54:26,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:54:26,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:54:26,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:54:26,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:54:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:54:26,299 INFO L87 Difference]: Start difference. First operand has 68 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 07:54:26,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:54:26,609 INFO L93 Difference]: Finished difference Result 138 states and 205 transitions. [2023-11-23 07:54:26,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:54:26,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 61 [2023-11-23 07:54:26,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:54:26,617 INFO L225 Difference]: With dead ends: 138 [2023-11-23 07:54:26,617 INFO L226 Difference]: Without dead ends: 70 [2023-11-23 07:54:26,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:54:26,624 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 69 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:54:26,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 61 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:54:26,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-23 07:54:26,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2023-11-23 07:54:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 40 states have internal predecessors, (47), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 07:54:26,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2023-11-23 07:54:26,687 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 61 [2023-11-23 07:54:26,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:54:26,688 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-23 07:54:26,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 07:54:26,704 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2023-11-23 07:54:26,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 07:54:26,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:54:26,707 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 07:54:26,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 07:54:26,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:54:26,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:54:26,712 INFO L85 PathProgramCache]: Analyzing trace with hash 848966304, now seen corresponding path program 1 times [2023-11-23 07:54:26,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:54:26,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178206449] [2023-11-23 07:54:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:26,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:54:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:27,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:27,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:27,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:54:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:27,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:54:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:27,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 07:54:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:27,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 07:54:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:27,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:54:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:27,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:54:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:27,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:27,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:27,257 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 07:54:27,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:54:27,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178206449] [2023-11-23 07:54:27,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178206449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:54:27,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:54:27,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:54:27,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948031816] [2023-11-23 07:54:27,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:54:27,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:54:27,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:54:27,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:54:27,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:54:27,261 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 07:54:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:54:27,539 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2023-11-23 07:54:27,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:54:27,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 61 [2023-11-23 07:54:27,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:54:27,543 INFO L225 Difference]: With dead ends: 90 [2023-11-23 07:54:27,544 INFO L226 Difference]: Without dead ends: 73 [2023-11-23 07:54:27,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:54:27,545 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 71 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:54:27,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 99 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:54:27,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-23 07:54:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2023-11-23 07:54:27,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 42 states have internal predecessors, (49), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2023-11-23 07:54:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2023-11-23 07:54:27,559 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 61 [2023-11-23 07:54:27,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:54:27,560 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2023-11-23 07:54:27,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 07:54:27,560 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2023-11-23 07:54:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-23 07:54:27,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:54:27,562 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 07:54:27,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 07:54:27,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:54:27,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:54:27,563 INFO L85 PathProgramCache]: Analyzing trace with hash 811649459, now seen corresponding path program 1 times [2023-11-23 07:54:27,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:54:27,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101584030] [2023-11-23 07:54:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:27,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:54:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:28,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:28,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:28,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:28,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:54:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:29,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:54:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:29,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 07:54:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:29,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 07:54:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:29,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:54:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:54:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:29,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:29,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-23 07:54:29,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:54:29,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101584030] [2023-11-23 07:54:29,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101584030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:54:29,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74220088] [2023-11-23 07:54:29,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:29,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:54:29,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:54:29,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:54:29,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 07:54:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:29,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 2444 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-23 07:54:29,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:54:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 07:54:29,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:54:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 07:54:30,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74220088] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:54:30,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:54:30,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 25 [2023-11-23 07:54:30,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907961811] [2023-11-23 07:54:30,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:54:30,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-23 07:54:30,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:54:30,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-23 07:54:30,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2023-11-23 07:54:30,175 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 25 states, 22 states have (on average 2.0) internal successors, (44), 17 states have internal predecessors, (44), 7 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 10 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-23 07:54:31,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:54:31,234 INFO L93 Difference]: Finished difference Result 142 states and 206 transitions. [2023-11-23 07:54:31,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 07:54:31,235 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.0) internal successors, (44), 17 states have internal predecessors, (44), 7 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 10 states have call predecessors, (19), 7 states have call successors, (19) Word has length 63 [2023-11-23 07:54:31,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:54:31,237 INFO L225 Difference]: With dead ends: 142 [2023-11-23 07:54:31,237 INFO L226 Difference]: Without dead ends: 111 [2023-11-23 07:54:31,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=1241, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 07:54:31,238 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 122 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:54:31,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 337 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:54:31,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-23 07:54:31,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 89. [2023-11-23 07:54:31,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 50 states have (on average 1.22) internal successors, (61), 53 states have internal predecessors, (61), 27 states have call successors, (27), 9 states have call predecessors, (27), 11 states have return successors, (30), 29 states have call predecessors, (30), 26 states have call successors, (30) [2023-11-23 07:54:31,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2023-11-23 07:54:31,255 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 63 [2023-11-23 07:54:31,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:54:31,255 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2023-11-23 07:54:31,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.0) internal successors, (44), 17 states have internal predecessors, (44), 7 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 10 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-23 07:54:31,256 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2023-11-23 07:54:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-23 07:54:31,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:54:31,257 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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] [2023-11-23 07:54:31,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 07:54:31,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:54:31,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:54:31,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:54:31,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1402569195, now seen corresponding path program 1 times [2023-11-23 07:54:31,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:54:31,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990056696] [2023-11-23 07:54:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:31,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:54:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:54:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:54:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 07:54:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:54:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:54:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:54:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:54:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:54:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 07:54:33,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:54:33,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990056696] [2023-11-23 07:54:33,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990056696] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:54:33,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658048609] [2023-11-23 07:54:33,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:33,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:54:33,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:54:33,692 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:54:33,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 07:54:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:34,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-23 07:54:34,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:54:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 07:54:34,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:54:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 07:54:34,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658048609] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:54:34,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:54:34,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 15] total 33 [2023-11-23 07:54:34,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981437694] [2023-11-23 07:54:34,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:54:34,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-23 07:54:34,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:54:34,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-23 07:54:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 07:54:34,684 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand has 33 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 22 states have internal predecessors, (54), 11 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (27), 15 states have call predecessors, (27), 10 states have call successors, (27) [2023-11-23 07:54:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:54:36,416 INFO L93 Difference]: Finished difference Result 197 states and 290 transitions. [2023-11-23 07:54:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-23 07:54:36,416 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 22 states have internal predecessors, (54), 11 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (27), 15 states have call predecessors, (27), 10 states have call successors, (27) Word has length 77 [2023-11-23 07:54:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:54:36,421 INFO L225 Difference]: With dead ends: 197 [2023-11-23 07:54:36,421 INFO L226 Difference]: Without dead ends: 137 [2023-11-23 07:54:36,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=319, Invalid=2987, Unknown=0, NotChecked=0, Total=3306 [2023-11-23 07:54:36,423 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 166 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:54:36,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 649 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 07:54:36,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-23 07:54:36,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 105. [2023-11-23 07:54:36,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 62 states have internal predecessors, (70), 35 states have call successors, (35), 9 states have call predecessors, (35), 12 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2023-11-23 07:54:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 145 transitions. [2023-11-23 07:54:36,437 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 145 transitions. Word has length 77 [2023-11-23 07:54:36,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:54:36,438 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 145 transitions. [2023-11-23 07:54:36,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 22 states have internal predecessors, (54), 11 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (27), 15 states have call predecessors, (27), 10 states have call successors, (27) [2023-11-23 07:54:36,438 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 145 transitions. [2023-11-23 07:54:36,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-23 07:54:36,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:54:36,440 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-23 07:54:36,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:54:36,654 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,SelfDestructingSolverStorable3 [2023-11-23 07:54:36,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:54:36,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:54:36,655 INFO L85 PathProgramCache]: Analyzing trace with hash -981371604, now seen corresponding path program 1 times [2023-11-23 07:54:36,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:54:36,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729353826] [2023-11-23 07:54:36,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:36,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:54:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:54:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:54:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 07:54:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:54:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:54:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:54:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:54:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:54:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 07:54:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 07:54:38,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:54:38,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729353826] [2023-11-23 07:54:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729353826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:54:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186773643] [2023-11-23 07:54:38,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:38,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:54:38,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:54:38,467 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:54:38,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 07:54:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:38,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-23 07:54:38,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:54:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-23 07:54:39,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:54:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-23 07:54:39,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186773643] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:54:39,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:54:39,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 35 [2023-11-23 07:54:39,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925593797] [2023-11-23 07:54:39,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:54:39,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-23 07:54:39,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:54:39,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-23 07:54:39,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 07:54:39,777 INFO L87 Difference]: Start difference. First operand 105 states and 145 transitions. Second operand has 35 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 23 states have internal predecessors, (58), 13 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (29), 13 states have call predecessors, (29), 11 states have call successors, (29) [2023-11-23 07:54:41,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:54:41,396 INFO L93 Difference]: Finished difference Result 154 states and 222 transitions. [2023-11-23 07:54:41,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-23 07:54:41,396 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 23 states have internal predecessors, (58), 13 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (29), 13 states have call predecessors, (29), 11 states have call successors, (29) Word has length 87 [2023-11-23 07:54:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:54:41,399 INFO L225 Difference]: With dead ends: 154 [2023-11-23 07:54:41,399 INFO L226 Difference]: Without dead ends: 129 [2023-11-23 07:54:41,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 187 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=315, Invalid=2547, Unknown=0, NotChecked=0, Total=2862 [2023-11-23 07:54:41,401 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 155 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:54:41,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 663 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 07:54:41,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-23 07:54:41,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2023-11-23 07:54:41,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 68 states have internal predecessors, (76), 40 states have call successors, (40), 9 states have call predecessors, (40), 13 states have return successors, (48), 42 states have call predecessors, (48), 39 states have call successors, (48) [2023-11-23 07:54:41,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 164 transitions. [2023-11-23 07:54:41,420 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 164 transitions. Word has length 87 [2023-11-23 07:54:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:54:41,420 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 164 transitions. [2023-11-23 07:54:41,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 23 states have internal predecessors, (58), 13 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (29), 13 states have call predecessors, (29), 11 states have call successors, (29) [2023-11-23 07:54:41,421 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 164 transitions. [2023-11-23 07:54:41,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 07:54:41,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:54:41,424 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-23 07:54:41,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 07:54:41,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:54:41,639 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:54:41,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:54:41,639 INFO L85 PathProgramCache]: Analyzing trace with hash -493119981, now seen corresponding path program 1 times [2023-11-23 07:54:41,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:54:41,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334836547] [2023-11-23 07:54:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:41,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:54:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:54:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:54:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:54:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:54:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:54:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:54:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:54:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 07:54:42,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:54:42,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334836547] [2023-11-23 07:54:42,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334836547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:54:42,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999062230] [2023-11-23 07:54:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:42,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:54:42,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:54:42,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:54:42,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 07:54:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:43,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-23 07:54:43,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:54:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 41 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 07:54:43,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:54:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 07:54:44,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999062230] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:54:44,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:54:44,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 20] total 53 [2023-11-23 07:54:44,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133922742] [2023-11-23 07:54:44,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:54:44,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-23 07:54:44,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:54:44,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-23 07:54:44,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2559, Unknown=0, NotChecked=0, Total=2756 [2023-11-23 07:54:44,431 INFO L87 Difference]: Start difference. First operand 117 states and 164 transitions. Second operand has 53 states, 38 states have (on average 2.026315789473684) internal successors, (77), 40 states have internal predecessors, (77), 18 states have call successors, (38), 8 states have call predecessors, (38), 12 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) [2023-11-23 07:54:46,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:54:46,258 INFO L93 Difference]: Finished difference Result 186 states and 280 transitions. [2023-11-23 07:54:46,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-23 07:54:46,259 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 38 states have (on average 2.026315789473684) internal successors, (77), 40 states have internal predecessors, (77), 18 states have call successors, (38), 8 states have call predecessors, (38), 12 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) Word has length 75 [2023-11-23 07:54:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:54:46,263 INFO L225 Difference]: With dead ends: 186 [2023-11-23 07:54:46,263 INFO L226 Difference]: Without dead ends: 172 [2023-11-23 07:54:46,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=536, Invalid=5470, Unknown=0, NotChecked=0, Total=6006 [2023-11-23 07:54:46,265 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 310 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:54:46,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 397 Invalid, 2570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 07:54:46,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-23 07:54:46,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 149. [2023-11-23 07:54:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 82 states have internal predecessors, (94), 56 states have call successors, (56), 10 states have call predecessors, (56), 15 states have return successors, (82), 61 states have call predecessors, (82), 55 states have call successors, (82) [2023-11-23 07:54:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 232 transitions. [2023-11-23 07:54:46,284 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 232 transitions. Word has length 75 [2023-11-23 07:54:46,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:54:46,285 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 232 transitions. [2023-11-23 07:54:46,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 38 states have (on average 2.026315789473684) internal successors, (77), 40 states have internal predecessors, (77), 18 states have call successors, (38), 8 states have call predecessors, (38), 12 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) [2023-11-23 07:54:46,285 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 232 transitions. [2023-11-23 07:54:46,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 07:54:46,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:54:46,287 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-23 07:54:46,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 07:54:46,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:54:46,504 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:54:46,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:54:46,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1269202040, now seen corresponding path program 1 times [2023-11-23 07:54:46,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:54:46,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681901525] [2023-11-23 07:54:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:46,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:54:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:54:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:54:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:54:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:54:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:54:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:54:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 07:54:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:54:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-23 07:54:47,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:54:47,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681901525] [2023-11-23 07:54:47,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681901525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:54:47,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457471684] [2023-11-23 07:54:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:47,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:54:47,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:54:47,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:54:47,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 07:54:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:48,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-23 07:54:48,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:54:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 61 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-23 07:54:48,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:54:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-23 07:54:49,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457471684] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:54:49,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:54:49,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [18, 24] total 54 [2023-11-23 07:54:49,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356910229] [2023-11-23 07:54:49,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:54:49,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 07:54:49,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:54:49,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 07:54:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2664, Unknown=0, NotChecked=0, Total=2862 [2023-11-23 07:54:49,537 INFO L87 Difference]: Start difference. First operand 149 states and 232 transitions. Second operand has 20 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 9 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-23 07:54:50,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:54:50,393 INFO L93 Difference]: Finished difference Result 199 states and 300 transitions. [2023-11-23 07:54:50,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 07:54:50,394 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 9 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 81 [2023-11-23 07:54:50,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:54:50,397 INFO L225 Difference]: With dead ends: 199 [2023-11-23 07:54:50,397 INFO L226 Difference]: Without dead ends: 185 [2023-11-23 07:54:50,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=334, Invalid=4636, Unknown=0, NotChecked=0, Total=4970 [2023-11-23 07:54:50,399 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 129 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:54:50,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 695 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:54:50,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-23 07:54:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 149. [2023-11-23 07:54:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 82 states have internal predecessors, (94), 56 states have call successors, (56), 10 states have call predecessors, (56), 15 states have return successors, (82), 61 states have call predecessors, (82), 55 states have call successors, (82) [2023-11-23 07:54:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 232 transitions. [2023-11-23 07:54:50,430 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 232 transitions. Word has length 81 [2023-11-23 07:54:50,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:54:50,432 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 232 transitions. [2023-11-23 07:54:50,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 9 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-23 07:54:50,432 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 232 transitions. [2023-11-23 07:54:50,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-23 07:54:50,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:54:50,435 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2023-11-23 07:54:50,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 07:54:50,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:54:50,653 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:54:50,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:54:50,653 INFO L85 PathProgramCache]: Analyzing trace with hash 515875517, now seen corresponding path program 1 times [2023-11-23 07:54:50,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:54:50,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297691869] [2023-11-23 07:54:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:50,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:54:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:54:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:54:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:54:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:54:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:54:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:54:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:54:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:54:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:54:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-23 07:54:51,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:54:51,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297691869] [2023-11-23 07:54:51,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297691869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:54:51,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:54:51,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 07:54:51,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723259370] [2023-11-23 07:54:51,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:54:51,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:54:51,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:54:51,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:54:51,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:54:51,326 INFO L87 Difference]: Start difference. First operand 149 states and 232 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 07:54:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:54:51,585 INFO L93 Difference]: Finished difference Result 181 states and 267 transitions. [2023-11-23 07:54:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:54:51,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 87 [2023-11-23 07:54:51,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:54:51,587 INFO L225 Difference]: With dead ends: 181 [2023-11-23 07:54:51,587 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 07:54:51,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:54:51,588 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 82 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:54:51,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 112 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:54:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 07:54:51,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2023-11-23 07:54:51,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 82 states have internal predecessors, (94), 56 states have call successors, (56), 10 states have call predecessors, (56), 15 states have return successors, (80), 61 states have call predecessors, (80), 55 states have call successors, (80) [2023-11-23 07:54:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 230 transitions. [2023-11-23 07:54:51,604 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 230 transitions. Word has length 87 [2023-11-23 07:54:51,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:54:51,604 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 230 transitions. [2023-11-23 07:54:51,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 07:54:51,605 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 230 transitions. [2023-11-23 07:54:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 07:54:51,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:54:51,606 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-23 07:54:51,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 07:54:51,606 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:54:51,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:54:51,606 INFO L85 PathProgramCache]: Analyzing trace with hash -806988577, now seen corresponding path program 1 times [2023-11-23 07:54:51,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:54:51,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509043866] [2023-11-23 07:54:51,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:51,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:54:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:54:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:54:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 07:54:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:54:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:54:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:54:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:54:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:54:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 07:54:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 07:54:52,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:54:52,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509043866] [2023-11-23 07:54:52,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509043866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:54:52,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:54:52,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 07:54:52,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354543452] [2023-11-23 07:54:52,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:54:52,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 07:54:52,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:54:52,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 07:54:52,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:54:52,421 INFO L87 Difference]: Start difference. First operand 149 states and 230 transitions. Second operand has 17 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 07:54:53,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:54:53,178 INFO L93 Difference]: Finished difference Result 208 states and 327 transitions. [2023-11-23 07:54:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 07:54:53,179 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 90 [2023-11-23 07:54:53,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:54:53,180 INFO L225 Difference]: With dead ends: 208 [2023-11-23 07:54:53,180 INFO L226 Difference]: Without dead ends: 182 [2023-11-23 07:54:53,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-11-23 07:54:53,181 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 91 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:54:53,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 514 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:54:53,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-23 07:54:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2023-11-23 07:54:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 81 states have (on average 1.2222222222222223) internal successors, (99), 86 states have internal predecessors, (99), 71 states have call successors, (71), 10 states have call predecessors, (71), 15 states have return successors, (98), 77 states have call predecessors, (98), 68 states have call successors, (98) [2023-11-23 07:54:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 268 transitions. [2023-11-23 07:54:53,201 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 268 transitions. Word has length 90 [2023-11-23 07:54:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:54:53,202 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 268 transitions. [2023-11-23 07:54:53,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 07:54:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 268 transitions. [2023-11-23 07:54:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-23 07:54:53,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:54:53,203 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2023-11-23 07:54:53,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 07:54:53,204 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:54:53,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:54:53,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1192620682, now seen corresponding path program 1 times [2023-11-23 07:54:53,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:54:53,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353057216] [2023-11-23 07:54:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:54:53,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:54:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:59,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:54:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:59,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:59,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:54:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:59,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:54:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:59,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 07:54:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:59,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:59,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:54:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:59,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:54:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:59,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:54:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:54:59,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:54:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:00,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:55:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:00,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 07:55:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:00,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 07:55:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:00,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 07:55:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:00,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:55:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:00,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:55:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 27 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-23 07:55:00,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:55:00,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353057216] [2023-11-23 07:55:00,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353057216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:55:00,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730766928] [2023-11-23 07:55:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:00,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:00,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:55:00,352 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:55:00,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 07:55:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:01,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 2575 conjuncts, 80 conjunts are in the unsatisfiable core [2023-11-23 07:55:01,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:55:01,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:55:01,579 INFO L349 Elim1Store]: treesize reduction 80, result has 30.4 percent of original size [2023-11-23 07:55:01,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 84 treesize of output 89 [2023-11-23 07:55:15,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:55:15,093 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 07:55:15,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 54 [2023-11-23 07:55:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 07:55:15,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:55:15,998 INFO L349 Elim1Store]: treesize reduction 699, result has 0.1 percent of original size [2023-11-23 07:55:15,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 154 treesize of output 1 [2023-11-23 07:55:19,035 INFO L349 Elim1Store]: treesize reduction 84, result has 80.5 percent of original size [2023-11-23 07:55:19,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 42515 treesize of output 29490 Killed by 15