./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_array_eq_harness.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_array_eq_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 c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:33:43,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:33:43,773 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:33:43,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:33:43,777 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:33:43,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:33:43,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:33:43,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:33:43,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:33:43,807 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:33:43,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:33:43,808 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:33:43,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:33:43,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:33:43,809 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:33:43,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:33:43,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:33:43,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:33:43,810 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:33:43,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:33:43,810 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:33:43,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:33:43,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:33:43,814 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:33:43,817 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:33:43,817 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:33:43,817 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:33:43,817 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:33:43,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:33:43,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:33:43,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:33:43,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:33:43,819 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:33:43,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:33:43,819 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:33:43,819 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:33:43,820 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:33:43,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:33:43,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:33:43,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:33:44,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:33:44,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:33:44,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:33:44,128 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:33:44,128 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:33:44,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_array_eq_harness.i [2023-11-23 06:33:45,166 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:33:45,633 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:33:45,635 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_eq_harness.i [2023-11-23 06:33:45,679 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08fd8c26f/4c29cd412b7f476694e053a51b9b0f67/FLAG3e93ba663 [2023-11-23 06:33:45,693 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08fd8c26f/4c29cd412b7f476694e053a51b9b0f67 [2023-11-23 06:33:45,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:33:45,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:33:45,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:33:45,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:33:45,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:33:45,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:33:45" (1/1) ... [2023-11-23 06:33:45,705 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e39828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:45, skipping insertion in model container [2023-11-23 06:33:45,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:33:45" (1/1) ... [2023-11-23 06:33:45,828 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:33:46,075 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_harness.i[4486,4499] [2023-11-23 06:33:46,083 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_harness.i[4546,4559] [2023-11-23 06:33:47,317 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:47,318 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:47,318 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:47,319 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:47,319 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:47,328 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:47,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:47,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:47,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:47,719 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:33:47,720 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:33:47,721 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:33:47,726 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:33:47,730 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:33:47,731 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:33:47,731 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:33:47,732 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:33:47,733 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:33:47,734 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:33:48,030 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:48,031 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:48,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:33:48,163 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:33:48,178 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_harness.i[4486,4499] [2023-11-23 06:33:48,178 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_harness.i[4546,4559] [2023-11-23 06:33:48,200 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:48,205 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:48,205 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:48,206 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:48,207 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:48,214 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:48,214 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:48,215 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:48,216 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:48,304 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:33:48,305 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:33:48,305 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:33:48,306 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:33:48,306 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:33:48,306 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:33:48,306 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:33:48,307 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:33:48,307 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:33:48,307 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:33:48,347 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-23 06:33:48,349 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:48,349 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:33:48,357 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-23 06:33:48,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:33:48,532 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,533 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,533 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,533 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,533 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,533 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,533 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,533 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,534 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,534 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,534 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,534 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,534 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,534 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,534 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,534 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,534 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,535 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:33:48,541 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:33:48,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48 WrapperNode [2023-11-23 06:33:48,541 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:33:48,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:33:48,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:33:48,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:33:48,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48" (1/1) ... [2023-11-23 06:33:48,606 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48" (1/1) ... [2023-11-23 06:33:48,674 INFO L138 Inliner]: procedures = 690, calls = 2619, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 792 [2023-11-23 06:33:48,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:33:48,675 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:33:48,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:33:48,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:33:48,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48" (1/1) ... [2023-11-23 06:33:48,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48" (1/1) ... [2023-11-23 06:33:48,707 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48" (1/1) ... [2023-11-23 06:33:48,761 INFO L188 MemorySlicer]: Split 512 memory accesses to 7 slices as follows [2, 5, 6, 256, 236, 4, 3]. 50 percent of accesses are in the largest equivalence class. The 502 initializations are split as follows [2, 5, 0, 256, 236, 0, 3]. The 2 writes are split as follows [0, 0, 2, 0, 0, 0, 0]. [2023-11-23 06:33:48,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48" (1/1) ... [2023-11-23 06:33:48,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48" (1/1) ... [2023-11-23 06:33:48,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48" (1/1) ... [2023-11-23 06:33:48,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48" (1/1) ... [2023-11-23 06:33:48,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48" (1/1) ... [2023-11-23 06:33:48,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48" (1/1) ... [2023-11-23 06:33:48,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:33:48,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:33:48,828 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:33:48,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:33:48,829 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48" (1/1) ... [2023-11-23 06:33:48,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:33:48,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:33:48,870 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 06:33:48,893 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 06:33:48,974 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 06:33:48,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:33:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:33:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:33:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:33:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:33:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:33:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:33:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:33:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:33:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 06:33:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:33:48,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:33:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:33:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:33:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 06:33:48,977 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 06:33:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:33:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:33:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:33:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:33:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 06:33:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 06:33:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 06:33:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 06:33:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:33:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:33:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:33:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2023-11-23 06:33:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2023-11-23 06:33:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:33:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:33:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:33:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:33:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:33:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:33:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 06:33:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 06:33:48,981 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 06:33:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:33:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:33:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:33:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:33:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:33:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:33:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 06:33:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:33:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:33:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:33:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:33:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:33:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:33:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 06:33:49,256 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:33:49,258 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:33:49,851 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:33:49,919 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:33:49,920 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 06:33:49,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:33:49 BoogieIcfgContainer [2023-11-23 06:33:49,920 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:33:49,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:33:49,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:33:49,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:33:49,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:33:45" (1/3) ... [2023-11-23 06:33:49,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8fb584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:33:49, skipping insertion in model container [2023-11-23 06:33:49,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:33:48" (2/3) ... [2023-11-23 06:33:49,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8fb584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:33:49, skipping insertion in model container [2023-11-23 06:33:49,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:33:49" (3/3) ... [2023-11-23 06:33:49,927 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_eq_harness.i [2023-11-23 06:33:49,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:33:49,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:33:49,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:33:49,979 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;@5df0b6eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:33:49,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:33:49,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 46 states have internal predecessors, (57), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-23 06:33:49,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 06:33:49,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:33:49,993 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 06:33:49,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:33:49,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:33:49,998 INFO L85 PathProgramCache]: Analyzing trace with hash -505696397, now seen corresponding path program 1 times [2023-11-23 06:33:50,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:33:50,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559344261] [2023-11-23 06:33:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:33:50,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:33:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:50,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:33:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:50,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:33:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:50,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:33:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:50,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 06:33:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:33:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:50,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:33:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:50,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:33:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:50,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 06:33:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:50,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:33:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:33:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:50,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:33:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:50,637 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 06:33:50,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:33:50,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559344261] [2023-11-23 06:33:50,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559344261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:33:50,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:33:50,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 06:33:50,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583860938] [2023-11-23 06:33:50,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:33:50,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:33:50,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:33:50,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:33:50,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 06:33:50,717 INFO L87 Difference]: Start difference. First operand has 78 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 46 states have internal predecessors, (57), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) 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 06:33:51,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:33:51,390 INFO L93 Difference]: Finished difference Result 158 states and 234 transitions. [2023-11-23 06:33:51,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:33:51,393 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 06:33:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:33:51,401 INFO L225 Difference]: With dead ends: 158 [2023-11-23 06:33:51,401 INFO L226 Difference]: Without dead ends: 80 [2023-11-23 06:33:51,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:33:51,425 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 65 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:33:51,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 92 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:33:51,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-23 06:33:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2023-11-23 06:33:51,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 44 states have internal predecessors, (53), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-23 06:33:51,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2023-11-23 06:33:51,505 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 61 [2023-11-23 06:33:51,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:33:51,506 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2023-11-23 06:33:51,506 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 06:33:51,506 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2023-11-23 06:33:51,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 06:33:51,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:33:51,523 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 06:33:51,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:33:51,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:33:51,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:33:51,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1588084785, now seen corresponding path program 1 times [2023-11-23 06:33:51,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:33:51,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118218071] [2023-11-23 06:33:51,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:33:51,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:33:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:52,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:33:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:52,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:33:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:52,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:33:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:52,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 06:33:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:52,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:33:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:52,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:33:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:52,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:33:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:52,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 06:33:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:33:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:52,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:33:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:33:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:52,221 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 06:33:52,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:33:52,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118218071] [2023-11-23 06:33:52,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118218071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:33:52,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:33:52,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 06:33:52,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339372657] [2023-11-23 06:33:52,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:33:52,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:33:52,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:33:52,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:33:52,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:33:52,225 INFO L87 Difference]: Start difference. First operand 76 states and 100 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 06:33:52,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:33:52,825 INFO L93 Difference]: Finished difference Result 116 states and 150 transitions. [2023-11-23 06:33:52,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:33:52,826 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 06:33:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:33:52,829 INFO L225 Difference]: With dead ends: 116 [2023-11-23 06:33:52,830 INFO L226 Difference]: Without dead ends: 83 [2023-11-23 06:33:52,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:33:52,836 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 67 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:33:52,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 154 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:33:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-23 06:33:52,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2023-11-23 06:33:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 44 states have (on average 1.25) internal successors, (55), 46 states have internal predecessors, (55), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (24), 24 states have call predecessors, (24), 23 states have call successors, (24) [2023-11-23 06:33:52,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 103 transitions. [2023-11-23 06:33:52,857 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 103 transitions. Word has length 61 [2023-11-23 06:33:52,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:33:52,857 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 103 transitions. [2023-11-23 06:33:52,857 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 06:33:52,857 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 103 transitions. [2023-11-23 06:33:52,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 06:33:52,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:33:52,862 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] [2023-11-23 06:33:52,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 06:33:52,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:33:52,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:33:52,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1769873791, now seen corresponding path program 1 times [2023-11-23 06:33:52,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:33:52,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601724900] [2023-11-23 06:33:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:33:52,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:33:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:54,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:33:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:54,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:33:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:54,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:33:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:54,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 06:33:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:54,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:33:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:54,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:33:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:54,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:33:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 06:33:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:54,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:33:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:54,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:33:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:33:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:54,712 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 06:33:54,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:33:54,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601724900] [2023-11-23 06:33:54,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601724900] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:33:54,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861541476] [2023-11-23 06:33:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:33:54,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:33:54,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:33:54,714 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 06:33:54,738 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 06:33:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:55,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-23 06:33:55,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:33:55,381 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 06:33:55,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:33:55,861 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 06:33:55,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861541476] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:33:55,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:33:55,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 25 [2023-11-23 06:33:55,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536429111] [2023-11-23 06:33:55,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:33:55,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-23 06:33:55,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:33:55,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-23 06:33:55,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2023-11-23 06:33:55,866 INFO L87 Difference]: Start difference. First operand 79 states and 103 transitions. Second operand has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 16 states have internal predecessors, (40), 7 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 10 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-23 06:33:57,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:33:57,945 INFO L93 Difference]: Finished difference Result 180 states and 262 transitions. [2023-11-23 06:33:57,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 06:33:57,945 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 16 states have internal predecessors, (40), 7 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 10 states have call predecessors, (17), 7 states have call successors, (17) Word has length 62 [2023-11-23 06:33:57,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:33:57,947 INFO L225 Difference]: With dead ends: 180 [2023-11-23 06:33:57,947 INFO L226 Difference]: Without dead ends: 133 [2023-11-23 06:33:57,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=165, Invalid=1241, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 06:33:57,948 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 151 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:33:57,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 460 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:33:57,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-23 06:33:57,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 112. [2023-11-23 06:33:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 62 states have internal predecessors, (73), 39 states have call successors, (39), 10 states have call predecessors, (39), 12 states have return successors, (44), 40 states have call predecessors, (44), 38 states have call successors, (44) [2023-11-23 06:33:57,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 156 transitions. [2023-11-23 06:33:57,977 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 156 transitions. Word has length 62 [2023-11-23 06:33:57,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:33:57,978 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 156 transitions. [2023-11-23 06:33:57,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 16 states have internal predecessors, (40), 7 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 10 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-23 06:33:57,978 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 156 transitions. [2023-11-23 06:33:57,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 06:33:57,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:33:57,982 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] [2023-11-23 06:33:58,006 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 06:33:58,203 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 06:33:58,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:33:58,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:33:58,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1377697622, now seen corresponding path program 1 times [2023-11-23 06:33:58,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:33:58,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599668933] [2023-11-23 06:33:58,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:33:58,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:33:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:59,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:33:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:59,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:33:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:59,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:33:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:59,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 06:33:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:33:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:59,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 06:33:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:33:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:33:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:33:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 06:34:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:00,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:34:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:00,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:34:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:00,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:34:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:00,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 06:34:00,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:34:00,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599668933] [2023-11-23 06:34:00,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599668933] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:34:00,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134660393] [2023-11-23 06:34:00,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:00,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:34:00,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:34:00,261 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 06:34:00,313 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 06:34:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:00,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 2566 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-23 06:34:00,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:34:00,993 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 06:34:00,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:34:01,329 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 06:34:01,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134660393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:34:01,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:34:01,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 15] total 30 [2023-11-23 06:34:01,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070141960] [2023-11-23 06:34:01,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:34:01,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-23 06:34:01,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:34:01,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-23 06:34:01,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2023-11-23 06:34:01,332 INFO L87 Difference]: Start difference. First operand 112 states and 156 transitions. Second operand has 30 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 20 states have internal predecessors, (50), 9 states have call successors, (26), 5 states have call predecessors, (26), 6 states have return successors, (25), 13 states have call predecessors, (25), 9 states have call successors, (25) [2023-11-23 06:34:04,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:34:04,163 INFO L93 Difference]: Finished difference Result 205 states and 289 transitions. [2023-11-23 06:34:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-23 06:34:04,164 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 20 states have internal predecessors, (50), 9 states have call successors, (26), 5 states have call predecessors, (26), 6 states have return successors, (25), 13 states have call predecessors, (25), 9 states have call successors, (25) Word has length 76 [2023-11-23 06:34:04,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:34:04,166 INFO L225 Difference]: With dead ends: 205 [2023-11-23 06:34:04,166 INFO L226 Difference]: Without dead ends: 133 [2023-11-23 06:34:04,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 169 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=265, Invalid=2387, Unknown=0, NotChecked=0, Total=2652 [2023-11-23 06:34:04,167 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 150 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:34:04,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 749 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 06:34:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-23 06:34:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2023-11-23 06:34:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 64 states have internal predecessors, (74), 39 states have call successors, (39), 10 states have call predecessors, (39), 13 states have return successors, (44), 40 states have call predecessors, (44), 38 states have call successors, (44) [2023-11-23 06:34:04,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 157 transitions. [2023-11-23 06:34:04,189 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 157 transitions. Word has length 76 [2023-11-23 06:34:04,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:34:04,190 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 157 transitions. [2023-11-23 06:34:04,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 20 states have internal predecessors, (50), 9 states have call successors, (26), 5 states have call predecessors, (26), 6 states have return successors, (25), 13 states have call predecessors, (25), 9 states have call successors, (25) [2023-11-23 06:34:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 157 transitions. [2023-11-23 06:34:04,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 06:34:04,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:34:04,191 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] [2023-11-23 06:34:04,208 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 06:34:04,405 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 06:34:04,405 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:34:04,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:34:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash -854260887, now seen corresponding path program 1 times [2023-11-23 06:34:04,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:34:04,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210306332] [2023-11-23 06:34:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:04,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:34:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 06:34:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:34:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 06:34:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:34:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:34:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:34:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:34:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:34:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:34:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:05,859 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 06:34:05,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:34:05,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210306332] [2023-11-23 06:34:05,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210306332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:34:05,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:34:05,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 06:34:05,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756430363] [2023-11-23 06:34:05,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:34:05,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 06:34:05,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:34:05,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 06:34:05,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:34:05,861 INFO L87 Difference]: Start difference. First operand 114 states and 157 transitions. Second operand has 17 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 06:34:07,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:34:07,671 INFO L93 Difference]: Finished difference Result 203 states and 299 transitions. [2023-11-23 06:34:07,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 06:34:07,671 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) Word has length 86 [2023-11-23 06:34:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:34:07,674 INFO L225 Difference]: With dead ends: 203 [2023-11-23 06:34:07,674 INFO L226 Difference]: Without dead ends: 159 [2023-11-23 06:34:07,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2023-11-23 06:34:07,676 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 113 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:34:07,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 870 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:34:07,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-23 06:34:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 139. [2023-11-23 06:34:07,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 77 states have internal predecessors, (90), 50 states have call successors, (50), 10 states have call predecessors, (50), 14 states have return successors, (62), 52 states have call predecessors, (62), 48 states have call successors, (62) [2023-11-23 06:34:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 202 transitions. [2023-11-23 06:34:07,691 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 202 transitions. Word has length 86 [2023-11-23 06:34:07,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:34:07,692 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 202 transitions. [2023-11-23 06:34:07,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 06:34:07,692 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 202 transitions. [2023-11-23 06:34:07,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 06:34:07,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:34:07,693 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] [2023-11-23 06:34:07,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 06:34:07,694 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:34:07,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:34:07,694 INFO L85 PathProgramCache]: Analyzing trace with hash 873370837, now seen corresponding path program 1 times [2023-11-23 06:34:07,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:34:07,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626569055] [2023-11-23 06:34:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:07,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:34:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 06:34:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:34:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 06:34:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:34:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:34:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:34:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 06:34:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:34:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:34:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:34:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-23 06:34:08,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:34:08,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626569055] [2023-11-23 06:34:08,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626569055] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:34:08,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781369133] [2023-11-23 06:34:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:08,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:34:08,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:34:08,847 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 06:34:08,885 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 06:34:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:09,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 2646 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-23 06:34:09,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:34:09,553 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-23 06:34:09,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:34:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-23 06:34:09,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781369133] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:34:09,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:34:09,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 13] total 28 [2023-11-23 06:34:09,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32454600] [2023-11-23 06:34:09,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:34:09,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-23 06:34:09,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:34:09,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-23 06:34:09,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2023-11-23 06:34:09,950 INFO L87 Difference]: Start difference. First operand 139 states and 202 transitions. Second operand has 28 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 10 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (30), 11 states have call predecessors, (30), 9 states have call successors, (30) [2023-11-23 06:34:12,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:34:12,569 INFO L93 Difference]: Finished difference Result 158 states and 221 transitions. [2023-11-23 06:34:12,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-23 06:34:12,569 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 10 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (30), 11 states have call predecessors, (30), 9 states have call successors, (30) Word has length 92 [2023-11-23 06:34:12,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:34:12,570 INFO L225 Difference]: With dead ends: 158 [2023-11-23 06:34:12,571 INFO L226 Difference]: Without dead ends: 140 [2023-11-23 06:34:12,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2023-11-23 06:34:12,572 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 93 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:34:12,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 935 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 06:34:12,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-23 06:34:12,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2023-11-23 06:34:12,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 76 states have internal predecessors, (87), 49 states have call successors, (49), 10 states have call predecessors, (49), 14 states have return successors, (60), 50 states have call predecessors, (60), 47 states have call successors, (60) [2023-11-23 06:34:12,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 196 transitions. [2023-11-23 06:34:12,585 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 196 transitions. Word has length 92 [2023-11-23 06:34:12,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:34:12,586 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 196 transitions. [2023-11-23 06:34:12,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 10 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (30), 11 states have call predecessors, (30), 9 states have call successors, (30) [2023-11-23 06:34:12,586 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 196 transitions. [2023-11-23 06:34:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 06:34:12,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:34:12,587 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 06:34:12,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 06:34:12,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:34:12,805 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:34:12,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:34:12,805 INFO L85 PathProgramCache]: Analyzing trace with hash 299802941, now seen corresponding path program 1 times [2023-11-23 06:34:12,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:34:12,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252897924] [2023-11-23 06:34:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:12,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:34:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:34:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:34:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 06:34:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 06:34:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:34:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:34:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:34:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:13,619 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 06:34:13,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:34:13,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252897924] [2023-11-23 06:34:13,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252897924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:34:13,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229390326] [2023-11-23 06:34:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:13,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:34:13,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:34:13,633 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 06:34:13,652 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 06:34:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:14,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-23 06:34:14,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:34:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 06:34:14,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:34:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 06:34:15,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229390326] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 06:34:15,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:34:15,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [14, 21] total 49 [2023-11-23 06:34:15,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111239025] [2023-11-23 06:34:15,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:34:15,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 06:34:15,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:34:15,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 06:34:15,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=2162, Unknown=0, NotChecked=0, Total=2352 [2023-11-23 06:34:15,459 INFO L87 Difference]: Start difference. First operand 136 states and 196 transitions. Second operand has 20 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-23 06:34:16,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:34:16,362 INFO L93 Difference]: Finished difference Result 194 states and 275 transitions. [2023-11-23 06:34:16,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 06:34:16,362 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 75 [2023-11-23 06:34:16,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:34:16,364 INFO L225 Difference]: With dead ends: 194 [2023-11-23 06:34:16,364 INFO L226 Difference]: Without dead ends: 161 [2023-11-23 06:34:16,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=286, Invalid=3496, Unknown=0, NotChecked=0, Total=3782 [2023-11-23 06:34:16,365 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 172 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:34:16,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 895 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:34:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-23 06:34:16,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 142. [2023-11-23 06:34:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 77 states have internal predecessors, (89), 53 states have call successors, (53), 10 states have call predecessors, (53), 14 states have return successors, (65), 55 states have call predecessors, (65), 51 states have call successors, (65) [2023-11-23 06:34:16,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 207 transitions. [2023-11-23 06:34:16,384 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 207 transitions. Word has length 75 [2023-11-23 06:34:16,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:34:16,385 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 207 transitions. [2023-11-23 06:34:16,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-23 06:34:16,385 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 207 transitions. [2023-11-23 06:34:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 06:34:16,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:34:16,386 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 06:34:16,411 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 06:34:16,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:34:16,602 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:34:16,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:34:16,602 INFO L85 PathProgramCache]: Analyzing trace with hash -378037103, now seen corresponding path program 1 times [2023-11-23 06:34:16,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:34:16,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815152716] [2023-11-23 06:34:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:16,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:34:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:34:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:34:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 06:34:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 06:34:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 06:34:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:34:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:34:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:34:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:17,732 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 06:34:17,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:34:17,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815152716] [2023-11-23 06:34:17,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815152716] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:34:17,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579107902] [2023-11-23 06:34:17,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:17,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:34:17,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:34:17,749 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 06:34:17,797 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 06:34:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:18,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-23 06:34:18,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:34:18,677 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-23 06:34:18,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:34:19,365 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 06:34:19,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579107902] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:34:19,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:34:19,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 19] total 48 [2023-11-23 06:34:19,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004089235] [2023-11-23 06:34:19,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:34:19,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-23 06:34:19,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:34:19,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-23 06:34:19,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2092, Unknown=0, NotChecked=0, Total=2256 [2023-11-23 06:34:19,368 INFO L87 Difference]: Start difference. First operand 142 states and 207 transitions. Second operand has 48 states, 37 states have (on average 1.945945945945946) internal successors, (72), 38 states have internal predecessors, (72), 18 states have call successors, (38), 6 states have call predecessors, (38), 12 states have return successors, (35), 20 states have call predecessors, (35), 17 states have call successors, (35) [2023-11-23 06:34:21,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:34:21,922 INFO L93 Difference]: Finished difference Result 262 states and 379 transitions. [2023-11-23 06:34:21,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 06:34:21,923 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 37 states have (on average 1.945945945945946) internal successors, (72), 38 states have internal predecessors, (72), 18 states have call successors, (38), 6 states have call predecessors, (38), 12 states have return successors, (35), 20 states have call predecessors, (35), 17 states have call successors, (35) Word has length 81 [2023-11-23 06:34:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:34:21,925 INFO L225 Difference]: With dead ends: 262 [2023-11-23 06:34:21,925 INFO L226 Difference]: Without dead ends: 183 [2023-11-23 06:34:21,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=375, Invalid=3915, Unknown=0, NotChecked=0, Total=4290 [2023-11-23 06:34:21,927 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 257 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:34:21,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 569 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 06:34:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-23 06:34:21,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 148. [2023-11-23 06:34:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 80 states have (on average 1.1875) internal successors, (95), 82 states have internal predecessors, (95), 53 states have call successors, (53), 10 states have call predecessors, (53), 14 states have return successors, (62), 56 states have call predecessors, (62), 51 states have call successors, (62) [2023-11-23 06:34:21,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 210 transitions. [2023-11-23 06:34:21,962 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 210 transitions. Word has length 81 [2023-11-23 06:34:21,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:34:21,962 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 210 transitions. [2023-11-23 06:34:21,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 37 states have (on average 1.945945945945946) internal successors, (72), 38 states have internal predecessors, (72), 18 states have call successors, (38), 6 states have call predecessors, (38), 12 states have return successors, (35), 20 states have call predecessors, (35), 17 states have call successors, (35) [2023-11-23 06:34:21,962 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 210 transitions. [2023-11-23 06:34:21,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-23 06:34:21,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:34:21,965 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:34:21,983 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 06:34:22,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:34:22,183 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:34:22,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:34:22,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1787333058, now seen corresponding path program 1 times [2023-11-23 06:34:22,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:34:22,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896387902] [2023-11-23 06:34:22,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:22,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:34:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:23,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:34:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:34:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:34:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:34:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:34:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:34:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:34:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:34:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:34:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:34:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 06:34:24,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:34:24,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896387902] [2023-11-23 06:34:24,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896387902] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:34:24,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050787851] [2023-11-23 06:34:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:24,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:34:24,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:34:24,447 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 06:34:24,464 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 06:34:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:24,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-23 06:34:24,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:34:25,645 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 3 proven. 80 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 06:34:25,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:34:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-23 06:34:26,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050787851] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:34:26,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:34:26,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 22] total 63 [2023-11-23 06:34:26,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135505407] [2023-11-23 06:34:26,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:34:26,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-11-23 06:34:26,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:34:26,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-11-23 06:34:26,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=3626, Unknown=0, NotChecked=0, Total=3906 [2023-11-23 06:34:26,704 INFO L87 Difference]: Start difference. First operand 148 states and 210 transitions. Second operand has 63 states, 47 states have (on average 1.872340425531915) internal successors, (88), 45 states have internal predecessors, (88), 22 states have call successors, (45), 6 states have call predecessors, (45), 14 states have return successors, (45), 26 states have call predecessors, (45), 21 states have call successors, (45) [2023-11-23 06:34:32,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:34:32,452 INFO L93 Difference]: Finished difference Result 289 states and 422 transitions. [2023-11-23 06:34:32,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-23 06:34:32,453 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 47 states have (on average 1.872340425531915) internal successors, (88), 45 states have internal predecessors, (88), 22 states have call successors, (45), 6 states have call predecessors, (45), 14 states have return successors, (45), 26 states have call predecessors, (45), 21 states have call successors, (45) Word has length 96 [2023-11-23 06:34:32,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:34:32,454 INFO L225 Difference]: With dead ends: 289 [2023-11-23 06:34:32,454 INFO L226 Difference]: Without dead ends: 225 [2023-11-23 06:34:32,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 190 SyntacticMatches, 6 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2631 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1024, Invalid=9482, Unknown=0, NotChecked=0, Total=10506 [2023-11-23 06:34:32,457 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 465 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 4627 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 5079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 4627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:34:32,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1691 Invalid, 5079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 4627 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 06:34:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-23 06:34:32,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 158. [2023-11-23 06:34:32,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 85 states have internal predecessors, (100), 59 states have call successors, (59), 10 states have call predecessors, (59), 14 states have return successors, (70), 63 states have call predecessors, (70), 57 states have call successors, (70) [2023-11-23 06:34:32,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 229 transitions. [2023-11-23 06:34:32,479 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 229 transitions. Word has length 96 [2023-11-23 06:34:32,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:34:32,479 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 229 transitions. [2023-11-23 06:34:32,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 47 states have (on average 1.872340425531915) internal successors, (88), 45 states have internal predecessors, (88), 22 states have call successors, (45), 6 states have call predecessors, (45), 14 states have return successors, (45), 26 states have call predecessors, (45), 21 states have call successors, (45) [2023-11-23 06:34:32,479 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 229 transitions. [2023-11-23 06:34:32,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 06:34:32,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:34:32,480 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] [2023-11-23 06:34:32,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 06:34:32,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:34:32,696 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:34:32,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:34:32,696 INFO L85 PathProgramCache]: Analyzing trace with hash 119610601, now seen corresponding path program 2 times [2023-11-23 06:34:32,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:34:32,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032981686] [2023-11-23 06:34:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:32,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:34:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:34:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:34:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:34:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:34:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:34:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:34:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:34:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:34:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:34:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:33,568 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 06:34:33,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:34:33,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032981686] [2023-11-23 06:34:33,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032981686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:34:33,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:34:33,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 06:34:33,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135516790] [2023-11-23 06:34:33,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:34:33,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 06:34:33,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:34:33,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 06:34:33,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:34:33,572 INFO L87 Difference]: Start difference. First operand 158 states and 229 transitions. Second operand has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:34:35,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:34:35,095 INFO L93 Difference]: Finished difference Result 220 states and 320 transitions. [2023-11-23 06:34:35,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 06:34:35,096 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) Word has length 86 [2023-11-23 06:34:35,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:34:35,098 INFO L225 Difference]: With dead ends: 220 [2023-11-23 06:34:35,098 INFO L226 Difference]: Without dead ends: 174 [2023-11-23 06:34:35,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2023-11-23 06:34:35,099 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 89 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:34:35,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 558 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:34:35,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-23 06:34:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 156. [2023-11-23 06:34:35,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 84 states have internal predecessors, (99), 58 states have call successors, (58), 10 states have call predecessors, (58), 14 states have return successors, (67), 62 states have call predecessors, (67), 56 states have call successors, (67) [2023-11-23 06:34:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 224 transitions. [2023-11-23 06:34:35,137 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 224 transitions. Word has length 86 [2023-11-23 06:34:35,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:34:35,138 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 224 transitions. [2023-11-23 06:34:35,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:34:35,138 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 224 transitions. [2023-11-23 06:34:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 06:34:35,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:34:35,145 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] [2023-11-23 06:34:35,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 06:34:35,146 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:34:35,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:34:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash 326156726, now seen corresponding path program 1 times [2023-11-23 06:34:35,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:34:35,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183240570] [2023-11-23 06:34:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:35,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:34:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:34:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:34:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:34:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:34:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:34:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 06:34:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:34:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:34:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:34:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:34:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,582 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-23 06:34:36,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:34:36,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183240570] [2023-11-23 06:34:36,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183240570] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:34:36,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747723603] [2023-11-23 06:34:36,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:36,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:34:36,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:34:36,597 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:34:36,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 06:34:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:36,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 2645 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-23 06:34:36,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:34:37,231 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-23 06:34:37,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:34:37,667 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-23 06:34:37,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747723603] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:34:37,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:34:37,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 15] total 34 [2023-11-23 06:34:37,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910311312] [2023-11-23 06:34:37,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:34:37,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-23 06:34:37,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:34:37,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-23 06:34:37,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 06:34:37,670 INFO L87 Difference]: Start difference. First operand 156 states and 224 transitions. Second operand has 34 states, 29 states have (on average 2.103448275862069) internal successors, (61), 22 states have internal predecessors, (61), 12 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (36), 16 states have call predecessors, (36), 10 states have call successors, (36) [2023-11-23 06:34:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:34:40,140 INFO L93 Difference]: Finished difference Result 206 states and 285 transitions. [2023-11-23 06:34:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-23 06:34:40,141 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 2.103448275862069) internal successors, (61), 22 states have internal predecessors, (61), 12 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (36), 16 states have call predecessors, (36), 10 states have call successors, (36) Word has length 92 [2023-11-23 06:34:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:34:40,143 INFO L225 Difference]: With dead ends: 206 [2023-11-23 06:34:40,143 INFO L226 Difference]: Without dead ends: 170 [2023-11-23 06:34:40,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 198 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=288, Invalid=2468, Unknown=0, NotChecked=0, Total=2756 [2023-11-23 06:34:40,145 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 214 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:34:40,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 749 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 06:34:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-23 06:34:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2023-11-23 06:34:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 84 states have internal predecessors, (99), 61 states have call successors, (61), 10 states have call predecessors, (61), 14 states have return successors, (70), 65 states have call predecessors, (70), 59 states have call successors, (70) [2023-11-23 06:34:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 230 transitions. [2023-11-23 06:34:40,197 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 230 transitions. Word has length 92 [2023-11-23 06:34:40,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:34:40,205 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 230 transitions. [2023-11-23 06:34:40,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 2.103448275862069) internal successors, (61), 22 states have internal predecessors, (61), 12 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (36), 16 states have call predecessors, (36), 10 states have call successors, (36) [2023-11-23 06:34:40,205 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 230 transitions. [2023-11-23 06:34:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 06:34:40,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:34:40,206 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] [2023-11-23 06:34:40,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 06:34:40,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:34:40,420 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:34:40,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:34:40,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1934327324, now seen corresponding path program 1 times [2023-11-23 06:34:40,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:34:40,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15487307] [2023-11-23 06:34:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:34:40,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:34:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:52,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:52,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:34:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:52,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:52,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:34:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:34:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:34:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:34:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:34:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:34:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:58,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 06:34:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:34:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:59,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:34:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:59,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:34:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:34:59,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:34:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:00,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:35:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:00,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:35:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-23 06:35:00,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:35:00,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15487307] [2023-11-23 06:35:00,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15487307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:35:00,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533265634] [2023-11-23 06:35:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:35:00,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:35:00,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:35:00,073 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:35:00,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 06:35:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:01,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-23 06:35:01,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:35:01,500 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 06:35:01,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 56 [2023-11-23 06:35:05,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 63 [2023-11-23 06:35:05,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:35:05,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 42 [2023-11-23 06:35:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 62 proven. 26 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-23 06:35:05,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:35:26,695 INFO L349 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2023-11-23 06:35:26,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 64 treesize of output 1 [2023-11-23 06:35:26,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:35:26,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 240 treesize of output 275 [2023-11-23 06:35:30,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533265634] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:35:30,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:35:30,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 38 [2023-11-23 06:35:30,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794035419] [2023-11-23 06:35:30,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:35:30,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-23 06:35:30,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:35:30,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-23 06:35:30,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2018, Unknown=9, NotChecked=0, Total=2162 [2023-11-23 06:35:30,574 INFO L87 Difference]: Start difference. First operand 159 states and 230 transitions. Second operand has 38 states, 31 states have (on average 2.161290322580645) internal successors, (67), 28 states have internal predecessors, (67), 12 states have call successors, (32), 8 states have call predecessors, (32), 10 states have return successors, (29), 12 states have call predecessors, (29), 11 states have call successors, (29) [2023-11-23 06:35:33,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:35:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:35:48,318 INFO L93 Difference]: Finished difference Result 206 states and 279 transitions. [2023-11-23 06:35:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-23 06:35:48,319 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 31 states have (on average 2.161290322580645) internal successors, (67), 28 states have internal predecessors, (67), 12 states have call successors, (32), 8 states have call predecessors, (32), 10 states have return successors, (29), 12 states have call predecessors, (29), 11 states have call successors, (29) Word has length 95 [2023-11-23 06:35:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:35:48,320 INFO L225 Difference]: With dead ends: 206 [2023-11-23 06:35:48,320 INFO L226 Difference]: Without dead ends: 182 [2023-11-23 06:35:48,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 148 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 41.6s TimeCoverageRelationStatistics Valid=373, Invalid=4448, Unknown=9, NotChecked=0, Total=4830 [2023-11-23 06:35:48,322 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 138 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 2927 mSolverCounterSat, 79 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 3008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2927 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:35:48,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1033 Invalid, 3008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2927 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2023-11-23 06:35:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-23 06:35:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2023-11-23 06:35:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 98 states have internal predecessors, (112), 64 states have call successors, (64), 15 states have call predecessors, (64), 19 states have return successors, (70), 67 states have call predecessors, (70), 61 states have call successors, (70) [2023-11-23 06:35:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 246 transitions. [2023-11-23 06:35:48,365 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 246 transitions. Word has length 95 [2023-11-23 06:35:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:35:48,365 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 246 transitions. [2023-11-23 06:35:48,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 31 states have (on average 2.161290322580645) internal successors, (67), 28 states have internal predecessors, (67), 12 states have call successors, (32), 8 states have call predecessors, (32), 10 states have return successors, (29), 12 states have call predecessors, (29), 11 states have call successors, (29) [2023-11-23 06:35:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 246 transitions. [2023-11-23 06:35:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-23 06:35:48,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:35:48,367 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 06:35:48,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 06:35:48,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 06:35:48,570 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:35:48,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:35:48,571 INFO L85 PathProgramCache]: Analyzing trace with hash -970215259, now seen corresponding path program 1 times [2023-11-23 06:35:48,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:35:48,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264173236] [2023-11-23 06:35:48,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:35:48,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:35:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:48,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:35:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:35:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:48,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:35:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:35:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:35:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:49,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:35:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:49,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 06:35:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:49,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 06:35:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:49,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:35:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:49,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 06:35:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:49,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 06:35:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:35:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:49,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:35:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:49,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:35:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:35:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:49,196 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 06:35:49,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:35:49,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264173236] [2023-11-23 06:35:49,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264173236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:35:49,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:35:49,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:35:49,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737239141] [2023-11-23 06:35:49,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:35:49,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:35:49,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:35:49,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:35:49,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:35:49,198 INFO L87 Difference]: Start difference. First operand 180 states and 246 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 06:35:49,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:35:49,830 INFO L93 Difference]: Finished difference Result 199 states and 267 transitions. [2023-11-23 06:35:49,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:35:49,830 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 06:35:49,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:35:49,832 INFO L225 Difference]: With dead ends: 199 [2023-11-23 06:35:49,832 INFO L226 Difference]: Without dead ends: 182 [2023-11-23 06:35:49,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:35:49,833 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 82 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:35:49,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 141 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:35:49,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-23 06:35:49,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2023-11-23 06:35:49,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 95 states have (on average 1.168421052631579) internal successors, (111), 98 states have internal predecessors, (111), 64 states have call successors, (64), 15 states have call predecessors, (64), 19 states have return successors, (69), 66 states have call predecessors, (69), 61 states have call successors, (69) [2023-11-23 06:35:49,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 244 transitions. [2023-11-23 06:35:49,870 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 244 transitions. Word has length 87 [2023-11-23 06:35:49,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:35:49,870 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 244 transitions. [2023-11-23 06:35:49,870 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 06:35:49,871 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 244 transitions. [2023-11-23 06:35:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 06:35:49,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:35:49,872 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:35:49,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 06:35:49,872 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:35:49,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:35:49,872 INFO L85 PathProgramCache]: Analyzing trace with hash 381721993, now seen corresponding path program 1 times [2023-11-23 06:35:49,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:35:49,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549053251] [2023-11-23 06:35:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:35:49,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:35:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:50,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:35:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:35:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:50,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:35:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:50,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:35:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:35:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:35:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:35:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:35:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:35:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:35:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:35:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:35:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:35:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 06:35:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:35:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 06:35:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 06:35:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:35:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:35:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-11-23 06:35:51,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:35:51,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549053251] [2023-11-23 06:35:51,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549053251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:35:51,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652883569] [2023-11-23 06:35:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:35:51,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:35:51,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:35:51,434 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:35:51,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 06:35:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:35:51,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 06:35:51,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:35:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-23 06:35:52,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:35:52,953 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-23 06:35:52,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652883569] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:35:52,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:35:52,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 15] total 42 [2023-11-23 06:35:52,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896263790] [2023-11-23 06:35:52,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:35:52,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-23 06:35:52,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:35:52,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-23 06:35:52,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2023-11-23 06:35:52,955 INFO L87 Difference]: Start difference. First operand 179 states and 244 transitions. Second operand has 42 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 33 states have internal predecessors, (78), 16 states have call successors, (43), 5 states have call predecessors, (43), 12 states have return successors, (42), 19 states have call predecessors, (42), 15 states have call successors, (42) [2023-11-23 06:35:55,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:35:55,859 INFO L93 Difference]: Finished difference Result 204 states and 269 transitions. [2023-11-23 06:35:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 06:35:55,859 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 33 states have internal predecessors, (78), 16 states have call successors, (43), 5 states have call predecessors, (43), 12 states have return successors, (42), 19 states have call predecessors, (42), 15 states have call successors, (42) Word has length 102 [2023-11-23 06:35:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:35:55,861 INFO L225 Difference]: With dead ends: 204 [2023-11-23 06:35:55,861 INFO L226 Difference]: Without dead ends: 186 [2023-11-23 06:35:55,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 212 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=311, Invalid=3471, Unknown=0, NotChecked=0, Total=3782 [2023-11-23 06:35:55,863 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 215 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 2585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:35:55,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 770 Invalid, 2585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 06:35:55,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-23 06:35:55,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 171. [2023-11-23 06:35:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 96 states have internal predecessors, (107), 59 states have call successors, (59), 15 states have call predecessors, (59), 19 states have return successors, (63), 60 states have call predecessors, (63), 56 states have call successors, (63) [2023-11-23 06:35:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 229 transitions. [2023-11-23 06:35:55,911 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 229 transitions. Word has length 102 [2023-11-23 06:35:55,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:35:55,912 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 229 transitions. [2023-11-23 06:35:55,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 33 states have internal predecessors, (78), 16 states have call successors, (43), 5 states have call predecessors, (43), 12 states have return successors, (42), 19 states have call predecessors, (42), 15 states have call successors, (42) [2023-11-23 06:35:55,912 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 229 transitions. [2023-11-23 06:35:55,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-23 06:35:55,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:35:55,914 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 06:35:55,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 06:35:56,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 06:35:56,131 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:35:56,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:35:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1993450576, now seen corresponding path program 1 times [2023-11-23 06:35:56,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:35:56,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723169907] [2023-11-23 06:35:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:35:56,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:35:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:36:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:36:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:36:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 06:36:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:36:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 06:36:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:36:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:36:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:36:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:36:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:36:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 06:36:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:36:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:36:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:36:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:36:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:36:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:04,833 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 06:36:04,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:36:04,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723169907] [2023-11-23 06:36:04,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723169907] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:36:04,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628827097] [2023-11-23 06:36:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:36:04,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:36:04,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:36:04,837 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:36:04,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 06:36:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:05,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 75 conjunts are in the unsatisfiable core [2023-11-23 06:36:05,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:36:05,488 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 06:36:05,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 56 [2023-11-23 06:36:07,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 63 [2023-11-23 06:36:07,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:36:07,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 42 [2023-11-23 06:36:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 72 proven. 6 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 06:36:07,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:36:08,392 INFO L349 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2023-11-23 06:36:08,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 64 treesize of output 1 [2023-11-23 06:36:08,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:36:08,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 187 treesize of output 267 [2023-11-23 06:36:13,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628827097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:36:13,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:36:13,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20] total 36 [2023-11-23 06:36:13,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154449249] [2023-11-23 06:36:13,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:36:13,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-23 06:36:13,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:36:13,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-23 06:36:13,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1766, Unknown=1, NotChecked=0, Total=1892 [2023-11-23 06:36:13,124 INFO L87 Difference]: Start difference. First operand 171 states and 229 transitions. Second operand has 36 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 26 states have internal predecessors, (65), 12 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (26), 12 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-23 06:36:23,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:36:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:36:40,748 INFO L93 Difference]: Finished difference Result 215 states and 273 transitions. [2023-11-23 06:36:40,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-23 06:36:40,749 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 26 states have internal predecessors, (65), 12 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (26), 12 states have call predecessors, (26), 11 states have call successors, (26) Word has length 96 [2023-11-23 06:36:40,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:36:40,750 INFO L225 Difference]: With dead ends: 215 [2023-11-23 06:36:40,750 INFO L226 Difference]: Without dead ends: 175 [2023-11-23 06:36:40,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 146 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=312, Invalid=3977, Unknown=1, NotChecked=0, Total=4290 [2023-11-23 06:36:40,751 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 159 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 3071 mSolverCounterSat, 109 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 3183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 3071 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:36:40,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 1571 Invalid, 3183 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [109 Valid, 3071 Invalid, 3 Unknown, 0 Unchecked, 16.7s Time] [2023-11-23 06:36:40,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-23 06:36:40,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 168. [2023-11-23 06:36:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 93 states have (on average 1.1397849462365592) internal successors, (106), 96 states have internal predecessors, (106), 53 states have call successors, (53), 20 states have call predecessors, (53), 21 states have return successors, (52), 51 states have call predecessors, (52), 49 states have call successors, (52) [2023-11-23 06:36:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 211 transitions. [2023-11-23 06:36:40,789 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 211 transitions. Word has length 96 [2023-11-23 06:36:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:36:40,789 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 211 transitions. [2023-11-23 06:36:40,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 26 states have internal predecessors, (65), 12 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (26), 12 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-23 06:36:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 211 transitions. [2023-11-23 06:36:40,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 06:36:40,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:36:40,790 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, 1] [2023-11-23 06:36:40,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 06:36:41,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 06:36:41,012 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:36:41,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:36:41,013 INFO L85 PathProgramCache]: Analyzing trace with hash 444277868, now seen corresponding path program 1 times [2023-11-23 06:36:41,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:36:41,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797883532] [2023-11-23 06:36:41,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:36:41,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:36:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:54,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:36:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:55,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:36:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:36:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:55,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:36:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:36:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:55,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:36:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:36:56,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 06:36:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:37:03,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 06:37:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:37:03,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:37:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:37:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 06:37:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:37:04,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 06:37:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:37:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:37:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:37:04,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:37:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:37:05,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:37:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:37:05,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:37:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:37:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 06:37:05,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:37:05,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797883532] [2023-11-23 06:37:05,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797883532] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:37:05,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70401230] [2023-11-23 06:37:05,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:37:05,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:37:05,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:37:05,128 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:37:05,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 06:37:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:37:05,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 90 conjunts are in the unsatisfiable core [2023-11-23 06:37:05,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:37:06,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 06:37:07,361 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 06:37:07,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 56 [2023-11-23 06:37:08,760 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-23 06:37:08,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-11-23 06:37:09,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 06:37:22,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 63 [2023-11-23 06:37:22,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:37:22,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 42 [2023-11-23 06:37:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 56 proven. 35 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 06:37:23,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:37:27,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70401230] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:37:27,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:37:27,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 46 [2023-11-23 06:37:27,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557062010] [2023-11-23 06:37:27,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:37:27,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-23 06:37:27,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:37:27,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-23 06:37:27,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2673, Unknown=2, NotChecked=0, Total=2862 [2023-11-23 06:37:27,995 INFO L87 Difference]: Start difference. First operand 168 states and 211 transitions. Second operand has 46 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 33 states have internal predecessors, (67), 16 states have call successors, (29), 9 states have call predecessors, (29), 10 states have return successors, (26), 15 states have call predecessors, (26), 14 states have call successors, (26) Killed by 15