./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_with_lookup_harness.i --full-output --preprocessor.use.memory.slicer 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_byte_buf_append_with_lookup_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:47:49,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:47:49,777 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:47:49,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:47:49,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:47:49,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:47:49,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:47:49,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:47:49,815 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:47:49,816 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:47:49,816 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:47:49,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:47:49,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:47:49,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:47:49,817 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:47:49,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:47:49,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:47:49,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:47:49,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:47:49,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:47:49,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:47:49,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:47:49,821 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:47:49,821 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:47:49,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:47:49,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:47:49,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:47:49,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:47:49,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:47:49,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:47:49,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:47:49,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:47:49,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:47:49,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:47:49,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:47:49,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:47:49,824 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:47:49,824 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:47:49,825 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:47:49,825 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:47:50,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:47:50,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:47:50,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:47:50,058 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:47:50,059 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:47:50,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2023-11-23 06:47:51,090 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:47:51,564 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:47:51,565 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2023-11-23 06:47:51,604 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad35cd364/79dad06a3c614224951736217f8e5ca6/FLAGfe774be6b [2023-11-23 06:47:51,619 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad35cd364/79dad06a3c614224951736217f8e5ca6 [2023-11-23 06:47:51,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:47:51,622 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:47:51,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:47:51,623 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:47:51,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:47:51,628 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:47:51" (1/1) ... [2023-11-23 06:47:51,629 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4bf71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:51, skipping insertion in model container [2023-11-23 06:47:51,629 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:47:51" (1/1) ... [2023-11-23 06:47:51,714 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:47:51,956 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2023-11-23 06:47:51,965 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2023-11-23 06:47:52,774 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:52,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:52,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:52,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:52,778 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:52,788 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:52,788 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:52,789 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:52,789 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:52,988 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:47:52,989 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:47:52,990 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:47:52,992 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:47:52,998 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:47:52,999 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:47:52,999 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:47:53,000 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:47:53,003 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:47:53,004 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:47:53,128 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,129 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,181 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,181 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:47:53,286 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:47:53,301 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2023-11-23 06:47:53,302 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2023-11-23 06:47:53,343 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,344 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,345 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,345 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,345 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,361 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,361 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,362 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,363 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,402 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:47:53,403 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:47:53,403 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:47:53,406 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:47:53,407 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:47:53,408 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:47:53,408 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:47:53,409 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:47:53,409 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:47:53,415 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:47:53,463 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,464 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8297] [2023-11-23 06:47:53,534 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,535 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:53,544 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8783-8794] [2023-11-23 06:47:53,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:47:53,716 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,716 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,716 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,716 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,717 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,717 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,717 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,717 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,717 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,717 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,717 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,717 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,718 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,718 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,718 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,718 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,718 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,718 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:53,725 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:47:53,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53 WrapperNode [2023-11-23 06:47:53,725 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:47:53,726 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:47:53,726 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:47:53,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:47:53,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53" (1/1) ... [2023-11-23 06:47:53,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53" (1/1) ... [2023-11-23 06:47:53,908 INFO L138 Inliner]: procedures = 690, calls = 2649, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 958 [2023-11-23 06:47:53,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:47:53,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:47:53,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:47:53,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:47:53,918 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53" (1/1) ... [2023-11-23 06:47:53,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53" (1/1) ... [2023-11-23 06:47:53,929 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53" (1/1) ... [2023-11-23 06:47:53,996 INFO L188 MemorySlicer]: Split 566 memory accesses to 10 slices as follows [2, 256, 236, 9, 18, 4, 9, 1, 28, 3]. 45 percent of accesses are in the largest equivalence class. The 508 initializations are split as follows [2, 256, 236, 4, 0, 2, 5, 0, 0, 3]. The 5 writes are split as follows [0, 0, 0, 0, 1, 0, 1, 0, 3, 0]. [2023-11-23 06:47:53,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53" (1/1) ... [2023-11-23 06:47:53,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53" (1/1) ... [2023-11-23 06:47:54,041 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53" (1/1) ... [2023-11-23 06:47:54,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53" (1/1) ... [2023-11-23 06:47:54,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53" (1/1) ... [2023-11-23 06:47:54,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53" (1/1) ... [2023-11-23 06:47:54,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:47:54,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:47:54,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:47:54,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:47:54,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53" (1/1) ... [2023-11-23 06:47:54,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:47:54,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:54,114 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 06:47:54,133 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 06:47:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 06:47:54,159 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 06:47:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 06:47:54,159 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 06:47:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:47:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:47:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:47:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:47:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:47:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:47:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:47:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:47:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:47:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 06:47:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 06:47:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 06:47:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-23 06:47:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 06:47:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 06:47:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:47:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:47:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:47:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:47:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:47:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:47:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:47:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:47:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:47:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:47:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 06:47:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 06:47:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-23 06:47:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-23 06:47:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:47:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:47:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:47:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:47:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:47:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:47:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:47:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 06:47:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 06:47:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:47:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:47:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:47:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:47:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:47:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:47:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 06:47:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 06:47:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-23 06:47:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-23 06:47:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:47:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:47:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:47:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:47:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:47:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:47:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 06:47:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 06:47:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-23 06:47:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-23 06:47:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:47:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:47:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 06:47:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 06:47:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2023-11-23 06:47:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2023-11-23 06:47:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 06:47:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 06:47:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:47:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:47:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:47:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:47:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:47:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:47:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 06:47:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 06:47:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 06:47:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-23 06:47:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:47:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:47:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:47:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:47:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:47:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:47:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 06:47:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 06:47:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 06:47:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-23 06:47:54,487 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:47:54,489 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:47:55,202 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:47:55,311 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:47:55,311 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 06:47:55,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:47:55 BoogieIcfgContainer [2023-11-23 06:47:55,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:47:55,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:47:55,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:47:55,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:47:55,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:47:51" (1/3) ... [2023-11-23 06:47:55,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346c5726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:47:55, skipping insertion in model container [2023-11-23 06:47:55,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:53" (2/3) ... [2023-11-23 06:47:55,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346c5726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:47:55, skipping insertion in model container [2023-11-23 06:47:55,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:47:55" (3/3) ... [2023-11-23 06:47:55,318 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness.i [2023-11-23 06:47:55,331 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:47:55,332 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:47:55,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:47:55,381 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;@287dee7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:47:55,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:47:55,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 88 states have internal predecessors, (111), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-23 06:47:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 06:47:55,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:55,399 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:55,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:55,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:55,404 INFO L85 PathProgramCache]: Analyzing trace with hash 90942132, now seen corresponding path program 1 times [2023-11-23 06:47:55,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:55,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028056213] [2023-11-23 06:47:55,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:55,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:55,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:55,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:47:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:55,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:47:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:47:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:47:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:47:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:47:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:47:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:47:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:47:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:47:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:47:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:47:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:47:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 06:47:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 06:47:56,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:56,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028056213] [2023-11-23 06:47:56,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028056213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:56,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:47:56,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 06:47:56,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821298305] [2023-11-23 06:47:56,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:56,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 06:47:56,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:56,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 06:47:56,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 06:47:56,212 INFO L87 Difference]: Start difference. First operand has 145 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 88 states have internal predecessors, (111), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 06:47:56,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:56,885 INFO L93 Difference]: Finished difference Result 288 states and 421 transitions. [2023-11-23 06:47:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:47:56,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 93 [2023-11-23 06:47:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:56,893 INFO L225 Difference]: With dead ends: 288 [2023-11-23 06:47:56,893 INFO L226 Difference]: Without dead ends: 143 [2023-11-23 06:47:56,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 06:47:56,899 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 63 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:56,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 163 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:47:56,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-23 06:47:56,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-23 06:47:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 86 states have (on average 1.244186046511628) internal successors, (107), 87 states have internal predecessors, (107), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-23 06:47:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 194 transitions. [2023-11-23 06:47:56,953 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 194 transitions. Word has length 93 [2023-11-23 06:47:56,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:56,953 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 194 transitions. [2023-11-23 06:47:56,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 06:47:56,954 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 194 transitions. [2023-11-23 06:47:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 06:47:56,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:56,957 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:56,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:47:56,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:56,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:56,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1495387820, now seen corresponding path program 1 times [2023-11-23 06:47:56,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:56,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356812294] [2023-11-23 06:47:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:56,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:47:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:47:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:47:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:47:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:47:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:47:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:47:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:47:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:47:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:47:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:47:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:47:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:47:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 06:47:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-23 06:47:57,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:57,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356812294] [2023-11-23 06:47:57,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356812294] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:57,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581518732] [2023-11-23 06:47:57,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:57,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:57,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:57,832 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 06:47:57,862 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 06:47:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:58,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 2603 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:47:58,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-23 06:47:58,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:47:58,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581518732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:58,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:47:58,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-23 06:47:58,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370971513] [2023-11-23 06:47:58,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:58,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:47:58,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:58,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:47:58,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:47:58,454 INFO L87 Difference]: Start difference. First operand 143 states and 194 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 06:47:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:58,841 INFO L93 Difference]: Finished difference Result 275 states and 376 transitions. [2023-11-23 06:47:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:47:58,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 93 [2023-11-23 06:47:58,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:58,847 INFO L225 Difference]: With dead ends: 275 [2023-11-23 06:47:58,847 INFO L226 Difference]: Without dead ends: 145 [2023-11-23 06:47:58,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:47:58,851 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 55 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:58,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 579 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:47:58,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-23 06:47:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-23 06:47:58,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 89 states have internal predecessors, (108), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-11-23 06:47:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 198 transitions. [2023-11-23 06:47:58,880 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 198 transitions. Word has length 93 [2023-11-23 06:47:58,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:58,880 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 198 transitions. [2023-11-23 06:47:58,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 06:47:58,881 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 198 transitions. [2023-11-23 06:47:58,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 06:47:58,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:58,886 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:58,904 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 06:47:59,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:59,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:59,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:59,101 INFO L85 PathProgramCache]: Analyzing trace with hash 864616319, now seen corresponding path program 1 times [2023-11-23 06:47:59,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:59,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51983007] [2023-11-23 06:47:59,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:59,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:47:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:47:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:47:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:47:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:47:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:47:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:47:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:47:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:47:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:47:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:47:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:47:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:47:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 06:47:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,509 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-23 06:47:59,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:59,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51983007] [2023-11-23 06:47:59,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51983007] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:59,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374555725] [2023-11-23 06:47:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:59,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:59,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:59,511 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 06:47:59,528 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 06:48:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 2617 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:48:00,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 06:48:00,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:00,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374555725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:00,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:00,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 06:48:00,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152938685] [2023-11-23 06:48:00,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:00,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:48:00,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:00,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:48:00,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:48:00,120 INFO L87 Difference]: Start difference. First operand 145 states and 198 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 06:48:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:00,296 INFO L93 Difference]: Finished difference Result 299 states and 414 transitions. [2023-11-23 06:48:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:48:00,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 99 [2023-11-23 06:48:00,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:00,300 INFO L225 Difference]: With dead ends: 299 [2023-11-23 06:48:00,300 INFO L226 Difference]: Without dead ends: 167 [2023-11-23 06:48:00,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:48:00,301 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 42 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:00,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 541 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:48:00,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-23 06:48:00,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 147. [2023-11-23 06:48:00,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 89 states have (on average 1.2359550561797752) internal successors, (110), 91 states have internal predecessors, (110), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-11-23 06:48:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 200 transitions. [2023-11-23 06:48:00,310 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 200 transitions. Word has length 99 [2023-11-23 06:48:00,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:00,310 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 200 transitions. [2023-11-23 06:48:00,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 06:48:00,311 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 200 transitions. [2023-11-23 06:48:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 06:48:00,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:00,312 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:00,329 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 06:48:00,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 06:48:00,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:00,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:00,527 INFO L85 PathProgramCache]: Analyzing trace with hash 941517117, now seen corresponding path program 1 times [2023-11-23 06:48:00,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:00,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708737949] [2023-11-23 06:48:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:00,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:48:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:48:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:48:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:48:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:48:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:48:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:48:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:48:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 06:48:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-23 06:48:00,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:00,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708737949] [2023-11-23 06:48:00,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708737949] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:00,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568278191] [2023-11-23 06:48:00,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:00,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:00,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:00,944 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 06:48:00,946 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 06:48:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:01,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:48:01,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 06:48:01,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:01,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568278191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:01,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:01,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 06:48:01,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822930978] [2023-11-23 06:48:01,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:01,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:48:01,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:01,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:48:01,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:48:01,387 INFO L87 Difference]: Start difference. First operand 147 states and 200 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 06:48:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:01,573 INFO L93 Difference]: Finished difference Result 291 states and 401 transitions. [2023-11-23 06:48:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:48:01,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 99 [2023-11-23 06:48:01,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:01,575 INFO L225 Difference]: With dead ends: 291 [2023-11-23 06:48:01,576 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 06:48:01,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:48:01,578 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 29 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:01,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 522 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:48:01,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 06:48:01,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2023-11-23 06:48:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 93 states have internal predecessors, (112), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-11-23 06:48:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 202 transitions. [2023-11-23 06:48:01,593 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 202 transitions. Word has length 99 [2023-11-23 06:48:01,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:01,594 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 202 transitions. [2023-11-23 06:48:01,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 06:48:01,594 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 202 transitions. [2023-11-23 06:48:01,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 06:48:01,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:01,595 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:01,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 06:48:01,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:01,810 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:01,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:01,811 INFO L85 PathProgramCache]: Analyzing trace with hash -22606527, now seen corresponding path program 1 times [2023-11-23 06:48:01,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:01,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282722035] [2023-11-23 06:48:01,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:01,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:48:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:48:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:48:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:48:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:48:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:48:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:48:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:48:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 06:48:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,301 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-23 06:48:02,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:02,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282722035] [2023-11-23 06:48:02,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282722035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:02,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884921199] [2023-11-23 06:48:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:02,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:02,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:02,303 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 06:48:02,308 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 06:48:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:48:02,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 76 proven. 14 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:48:02,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:48:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-23 06:48:03,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884921199] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:48:03,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:48:03,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-23 06:48:03,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706654783] [2023-11-23 06:48:03,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:48:03,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:48:03,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:03,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:48:03,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:48:03,049 INFO L87 Difference]: Start difference. First operand 149 states and 202 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 7 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) [2023-11-23 06:48:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:03,929 INFO L93 Difference]: Finished difference Result 271 states and 371 transitions. [2023-11-23 06:48:03,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:48:03,930 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 7 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) Word has length 99 [2023-11-23 06:48:03,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:03,931 INFO L225 Difference]: With dead ends: 271 [2023-11-23 06:48:03,931 INFO L226 Difference]: Without dead ends: 151 [2023-11-23 06:48:03,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:48:03,932 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 270 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:03,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 317 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:48:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-23 06:48:03,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-23 06:48:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 95 states have internal predecessors, (113), 44 states have call successors, (44), 12 states have call predecessors, (44), 14 states have return successors, (49), 43 states have call predecessors, (49), 43 states have call successors, (49) [2023-11-23 06:48:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 206 transitions. [2023-11-23 06:48:03,940 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 206 transitions. Word has length 99 [2023-11-23 06:48:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:03,941 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 206 transitions. [2023-11-23 06:48:03,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 7 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) [2023-11-23 06:48:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 206 transitions. [2023-11-23 06:48:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 06:48:03,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:03,942 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:03,957 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 06:48:04,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:04,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:04,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:04,158 INFO L85 PathProgramCache]: Analyzing trace with hash -799072548, now seen corresponding path program 1 times [2023-11-23 06:48:04,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:04,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976732759] [2023-11-23 06:48:04,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:04,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:48:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:48:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:48:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:05,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:48:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:05,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:48:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 06:48:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:05,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:48:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-23 06:48:05,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:05,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976732759] [2023-11-23 06:48:05,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976732759] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:05,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396720051] [2023-11-23 06:48:05,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:05,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:05,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:05,069 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 06:48:05,092 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 06:48:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:05,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 2625 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:48:05,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 06:48:05,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396720051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:05,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:05,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-11-23 06:48:05,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537649772] [2023-11-23 06:48:05,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:05,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:48:05,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:48:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:48:05,687 INFO L87 Difference]: Start difference. First operand 151 states and 206 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 06:48:06,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:06,000 INFO L93 Difference]: Finished difference Result 270 states and 367 transitions. [2023-11-23 06:48:06,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:48:06,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 101 [2023-11-23 06:48:06,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:06,002 INFO L225 Difference]: With dead ends: 270 [2023-11-23 06:48:06,002 INFO L226 Difference]: Without dead ends: 149 [2023-11-23 06:48:06,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:48:06,003 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 68 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:06,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 721 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:48:06,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-23 06:48:06,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-11-23 06:48:06,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 93 states have internal predecessors, (111), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-11-23 06:48:06,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 201 transitions. [2023-11-23 06:48:06,010 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 201 transitions. Word has length 101 [2023-11-23 06:48:06,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:06,010 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 201 transitions. [2023-11-23 06:48:06,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 06:48:06,011 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 201 transitions. [2023-11-23 06:48:06,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 06:48:06,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:06,012 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:06,029 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 06:48:06,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:06,220 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:06,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:06,221 INFO L85 PathProgramCache]: Analyzing trace with hash -346307332, now seen corresponding path program 1 times [2023-11-23 06:48:06,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:06,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883121555] [2023-11-23 06:48:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:06,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:48:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:48:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:48:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:48:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:48:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:48:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:48:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 06:48:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 06:48:06,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:06,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883121555] [2023-11-23 06:48:06,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883121555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:06,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:48:06,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:48:06,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396325008] [2023-11-23 06:48:06,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:06,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:48:06,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:06,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:48:06,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:48:06,588 INFO L87 Difference]: Start difference. First operand 149 states and 201 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 06:48:07,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:07,424 INFO L93 Difference]: Finished difference Result 263 states and 352 transitions. [2023-11-23 06:48:07,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:48:07,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 113 [2023-11-23 06:48:07,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:07,425 INFO L225 Difference]: With dead ends: 263 [2023-11-23 06:48:07,426 INFO L226 Difference]: Without dead ends: 147 [2023-11-23 06:48:07,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:48:07,427 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 122 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:07,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 408 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:48:07,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-23 06:48:07,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-23 06:48:07,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 90 states have (on average 1.211111111111111) internal successors, (109), 91 states have internal predecessors, (109), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-23 06:48:07,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 196 transitions. [2023-11-23 06:48:07,434 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 196 transitions. Word has length 113 [2023-11-23 06:48:07,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:07,435 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 196 transitions. [2023-11-23 06:48:07,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 06:48:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 196 transitions. [2023-11-23 06:48:07,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-23 06:48:07,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:07,436 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:07,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 06:48:07,436 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:07,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:07,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2096188841, now seen corresponding path program 1 times [2023-11-23 06:48:07,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:07,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709109631] [2023-11-23 06:48:07,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:07,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:07,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:07,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:07,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:07,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:48:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:07,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:07,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:48:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:07,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:48:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:07,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:48:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:48:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:48:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 06:48:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:08,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 06:48:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-23 06:48:08,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:08,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709109631] [2023-11-23 06:48:08,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709109631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:08,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:48:08,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:48:08,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803410877] [2023-11-23 06:48:08,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:08,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:48:08,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:08,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:48:08,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:48:08,114 INFO L87 Difference]: Start difference. First operand 147 states and 196 transitions. Second operand has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 06:48:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:09,012 INFO L93 Difference]: Finished difference Result 158 states and 211 transitions. [2023-11-23 06:48:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:48:09,012 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 115 [2023-11-23 06:48:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:09,014 INFO L225 Difference]: With dead ends: 158 [2023-11-23 06:48:09,014 INFO L226 Difference]: Without dead ends: 156 [2023-11-23 06:48:09,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:48:09,015 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 86 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:09,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 663 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:48:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-23 06:48:09,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2023-11-23 06:48:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 95 states have (on average 1.2) internal successors, (114), 97 states have internal predecessors, (114), 45 states have call successors, (45), 13 states have call predecessors, (45), 14 states have return successors, (49), 44 states have call predecessors, (49), 44 states have call successors, (49) [2023-11-23 06:48:09,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 208 transitions. [2023-11-23 06:48:09,026 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 208 transitions. Word has length 115 [2023-11-23 06:48:09,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:09,027 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 208 transitions. [2023-11-23 06:48:09,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 06:48:09,027 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 208 transitions. [2023-11-23 06:48:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 06:48:09,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:09,029 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:09,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 06:48:09,029 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:09,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1554073738, now seen corresponding path program 1 times [2023-11-23 06:48:09,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:09,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112762037] [2023-11-23 06:48:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:09,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:48:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:48:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:48:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:48:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:48:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:48:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 06:48:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:48:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 06:48:09,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:09,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112762037] [2023-11-23 06:48:09,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112762037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:09,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:48:09,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:48:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36364396] [2023-11-23 06:48:09,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:09,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:48:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:48:09,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:48:09,636 INFO L87 Difference]: Start difference. First operand 155 states and 208 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 06:48:10,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:10,764 INFO L93 Difference]: Finished difference Result 238 states and 312 transitions. [2023-11-23 06:48:10,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:48:10,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 119 [2023-11-23 06:48:10,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:10,766 INFO L225 Difference]: With dead ends: 238 [2023-11-23 06:48:10,766 INFO L226 Difference]: Without dead ends: 159 [2023-11-23 06:48:10,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:48:10,768 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 62 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:10,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 423 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 06:48:10,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-23 06:48:10,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-23 06:48:10,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 98 states have (on average 1.1938775510204083) internal successors, (117), 100 states have internal predecessors, (117), 45 states have call successors, (45), 13 states have call predecessors, (45), 15 states have return successors, (50), 45 states have call predecessors, (50), 44 states have call successors, (50) [2023-11-23 06:48:10,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 212 transitions. [2023-11-23 06:48:10,782 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 212 transitions. Word has length 119 [2023-11-23 06:48:10,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:10,782 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 212 transitions. [2023-11-23 06:48:10,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 06:48:10,783 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 212 transitions. [2023-11-23 06:48:10,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 06:48:10,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:10,784 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:10,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 06:48:10,785 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:10,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:10,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1892661237, now seen corresponding path program 1 times [2023-11-23 06:48:10,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:10,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119912620] [2023-11-23 06:48:10,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:10,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:48:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:48:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:48:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:48:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:48:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:48:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 06:48:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 06:48:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 06:48:11,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:11,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119912620] [2023-11-23 06:48:11,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119912620] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:11,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098184319] [2023-11-23 06:48:11,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:11,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:11,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:11,842 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 06:48:11,844 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 06:48:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:12,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-23 06:48:12,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:12,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 06:48:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 06:48:13,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:13,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098184319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:13,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:13,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9] total 20 [2023-11-23 06:48:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137100865] [2023-11-23 06:48:13,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:13,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 06:48:13,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:13,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 06:48:13,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:48:13,031 INFO L87 Difference]: Start difference. First operand 159 states and 212 transitions. Second operand has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 6 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-23 06:48:15,725 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 06:48:18,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:20,158 WARN L539 Checker$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 06:48:22,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:23,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:23,227 INFO L93 Difference]: Finished difference Result 412 states and 548 transitions. [2023-11-23 06:48:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 06:48:23,228 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 6 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 119 [2023-11-23 06:48:23,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:23,229 INFO L225 Difference]: With dead ends: 412 [2023-11-23 06:48:23,229 INFO L226 Difference]: Without dead ends: 266 [2023-11-23 06:48:23,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 127 SyntacticMatches, 12 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2023-11-23 06:48:23,230 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 181 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 66 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:23,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1154 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 960 Invalid, 4 Unknown, 0 Unchecked, 10.0s Time] [2023-11-23 06:48:23,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-23 06:48:23,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 249. [2023-11-23 06:48:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 158 states have (on average 1.2088607594936709) internal successors, (191), 162 states have internal predecessors, (191), 68 states have call successors, (68), 20 states have call predecessors, (68), 22 states have return successors, (69), 66 states have call predecessors, (69), 66 states have call successors, (69) [2023-11-23 06:48:23,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 328 transitions. [2023-11-23 06:48:23,250 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 328 transitions. Word has length 119 [2023-11-23 06:48:23,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:23,250 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 328 transitions. [2023-11-23 06:48:23,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 6 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-23 06:48:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 328 transitions. [2023-11-23 06:48:23,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-23 06:48:23,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:23,252 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:23,282 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 06:48:23,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:23,469 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:23,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:23,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1252968843, now seen corresponding path program 1 times [2023-11-23 06:48:23,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:23,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139680055] [2023-11-23 06:48:23,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:23,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:48:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:48:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:48:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:48:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:48:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 06:48:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 06:48:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:48:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:48:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:48:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 06:48:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,216 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-23 06:48:24,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:24,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139680055] [2023-11-23 06:48:24,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139680055] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:24,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839448947] [2023-11-23 06:48:24,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:24,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:24,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:24,218 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 06:48:24,219 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 06:48:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 2676 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:48:24,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-23 06:48:24,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:24,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839448947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:24,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:24,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2023-11-23 06:48:24,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134428748] [2023-11-23 06:48:24,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:24,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:48:24,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:24,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:48:24,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:48:24,714 INFO L87 Difference]: Start difference. First operand 249 states and 328 transitions. Second operand has 9 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 06:48:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:25,215 INFO L93 Difference]: Finished difference Result 468 states and 621 transitions. [2023-11-23 06:48:25,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:48:25,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 127 [2023-11-23 06:48:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:25,218 INFO L225 Difference]: With dead ends: 468 [2023-11-23 06:48:25,218 INFO L226 Difference]: Without dead ends: 257 [2023-11-23 06:48:25,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:48:25,219 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 13 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:25,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1308 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:48:25,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-23 06:48:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 253. [2023-11-23 06:48:25,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 161 states have (on average 1.204968944099379) internal successors, (194), 166 states have internal predecessors, (194), 68 states have call successors, (68), 20 states have call predecessors, (68), 23 states have return successors, (74), 66 states have call predecessors, (74), 66 states have call successors, (74) [2023-11-23 06:48:25,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 336 transitions. [2023-11-23 06:48:25,238 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 336 transitions. Word has length 127 [2023-11-23 06:48:25,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:25,240 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 336 transitions. [2023-11-23 06:48:25,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 06:48:25,240 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 336 transitions. [2023-11-23 06:48:25,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-23 06:48:25,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:25,242 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:25,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 06:48:25,460 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 06:48:25,460 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:25,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:25,461 INFO L85 PathProgramCache]: Analyzing trace with hash 839910224, now seen corresponding path program 1 times [2023-11-23 06:48:25,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:25,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40860630] [2023-11-23 06:48:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:25,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:48:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:48:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:48:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:48:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:48:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 06:48:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 06:48:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 06:48:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 06:48:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:48:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 06:48:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,234 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-23 06:48:26,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:26,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40860630] [2023-11-23 06:48:26,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40860630] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:26,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954881525] [2023-11-23 06:48:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:26,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:26,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:26,236 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 06:48:26,252 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 06:48:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:26,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:48:26,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 06:48:26,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:26,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954881525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:26,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:26,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-23 06:48:26,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198653171] [2023-11-23 06:48:26,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:26,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:48:26,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:26,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:48:26,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:48:26,738 INFO L87 Difference]: Start difference. First operand 253 states and 336 transitions. Second operand has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 06:48:27,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:27,631 INFO L93 Difference]: Finished difference Result 491 states and 653 transitions. [2023-11-23 06:48:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:48:27,632 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2023-11-23 06:48:27,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:27,634 INFO L225 Difference]: With dead ends: 491 [2023-11-23 06:48:27,634 INFO L226 Difference]: Without dead ends: 257 [2023-11-23 06:48:27,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:48:27,636 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 13 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:27,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1311 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:48:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-23 06:48:27,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 253. [2023-11-23 06:48:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 161 states have (on average 1.204968944099379) internal successors, (194), 166 states have internal predecessors, (194), 68 states have call successors, (68), 20 states have call predecessors, (68), 23 states have return successors, (73), 66 states have call predecessors, (73), 66 states have call successors, (73) [2023-11-23 06:48:27,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 335 transitions. [2023-11-23 06:48:27,658 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 335 transitions. Word has length 129 [2023-11-23 06:48:27,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:27,658 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 335 transitions. [2023-11-23 06:48:27,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 06:48:27,658 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 335 transitions. [2023-11-23 06:48:27,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-23 06:48:27,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:27,659 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:27,675 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 06:48:27,874 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 06:48:27,874 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:27,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:27,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1220954347, now seen corresponding path program 2 times [2023-11-23 06:48:27,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:27,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149828118] [2023-11-23 06:48:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:27,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:48:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 06:48:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:48:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:48:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 06:48:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-11-23 06:48:28,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:28,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149828118] [2023-11-23 06:48:28,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149828118] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:28,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43736249] [2023-11-23 06:48:28,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:48:28,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:28,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:28,925 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 06:48:28,948 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 06:48:29,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:48:29,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:48:29,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-23 06:48:29,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 103 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 06:48:30,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:48:30,682 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-11-23 06:48:30,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 37 [2023-11-23 06:48:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 28 proven. 13 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-23 06:48:30,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43736249] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:48:30,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:48:30,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 12] total 32 [2023-11-23 06:48:30,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51055068] [2023-11-23 06:48:30,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:48:30,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-23 06:48:30,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:30,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-23 06:48:30,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2023-11-23 06:48:30,892 INFO L87 Difference]: Start difference. First operand 253 states and 335 transitions. Second operand has 32 states, 31 states have (on average 4.290322580645161) internal successors, (133), 30 states have internal predecessors, (133), 8 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (39), 7 states have call predecessors, (39), 8 states have call successors, (39) [2023-11-23 06:48:39,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:39,387 INFO L93 Difference]: Finished difference Result 1067 states and 1493 transitions. [2023-11-23 06:48:39,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-11-23 06:48:39,387 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.290322580645161) internal successors, (133), 30 states have internal predecessors, (133), 8 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (39), 7 states have call predecessors, (39), 8 states have call successors, (39) Word has length 131 [2023-11-23 06:48:39,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:39,401 INFO L225 Difference]: With dead ends: 1067 [2023-11-23 06:48:39,401 INFO L226 Difference]: Without dead ends: 849 [2023-11-23 06:48:39,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 280 SyntacticMatches, 8 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3006 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1530, Invalid=10026, Unknown=0, NotChecked=0, Total=11556 [2023-11-23 06:48:39,406 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 935 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 4217 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 4766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 4217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:39,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 1150 Invalid, 4766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 4217 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-23 06:48:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2023-11-23 06:48:39,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 598. [2023-11-23 06:48:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 402 states have (on average 1.2039800995024876) internal successors, (484), 411 states have internal predecessors, (484), 146 states have call successors, (146), 41 states have call predecessors, (146), 49 states have return successors, (186), 145 states have call predecessors, (186), 142 states have call successors, (186) [2023-11-23 06:48:39,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 816 transitions. [2023-11-23 06:48:39,466 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 816 transitions. Word has length 131 [2023-11-23 06:48:39,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:39,467 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 816 transitions. [2023-11-23 06:48:39,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.290322580645161) internal successors, (133), 30 states have internal predecessors, (133), 8 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (39), 7 states have call predecessors, (39), 8 states have call successors, (39) [2023-11-23 06:48:39,467 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 816 transitions. [2023-11-23 06:48:39,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-23 06:48:39,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:39,469 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:39,492 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 06:48:39,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 06:48:39,684 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:39,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:39,685 INFO L85 PathProgramCache]: Analyzing trace with hash 31590900, now seen corresponding path program 1 times [2023-11-23 06:48:39,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:39,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797146858] [2023-11-23 06:48:39,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:39,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:48:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 06:48:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:48:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:48:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:40,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 06:48:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:40,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:48:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 06:48:40,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:40,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797146858] [2023-11-23 06:48:40,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797146858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:40,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:48:40,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:48:40,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526740879] [2023-11-23 06:48:40,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:40,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:48:40,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:40,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:48:40,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:48:40,160 INFO L87 Difference]: Start difference. First operand 598 states and 816 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 06:48:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:41,406 INFO L93 Difference]: Finished difference Result 815 states and 1099 transitions. [2023-11-23 06:48:41,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:48:41,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 135 [2023-11-23 06:48:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:41,411 INFO L225 Difference]: With dead ends: 815 [2023-11-23 06:48:41,411 INFO L226 Difference]: Without dead ends: 636 [2023-11-23 06:48:41,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:48:41,412 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 75 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:41,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 417 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 06:48:41,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-11-23 06:48:41,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 602. [2023-11-23 06:48:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 406 states have (on average 1.2019704433497538) internal successors, (488), 415 states have internal predecessors, (488), 146 states have call successors, (146), 41 states have call predecessors, (146), 49 states have return successors, (186), 145 states have call predecessors, (186), 142 states have call successors, (186) [2023-11-23 06:48:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 820 transitions. [2023-11-23 06:48:41,454 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 820 transitions. Word has length 135 [2023-11-23 06:48:41,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:41,455 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 820 transitions. [2023-11-23 06:48:41,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 06:48:41,455 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 820 transitions. [2023-11-23 06:48:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 06:48:41,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:41,456 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:41,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 06:48:41,457 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:41,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:41,457 INFO L85 PathProgramCache]: Analyzing trace with hash -321666908, now seen corresponding path program 1 times [2023-11-23 06:48:41,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:41,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197258115] [2023-11-23 06:48:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:41,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:48:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 06:48:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:48:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:48:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 06:48:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:48:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 06:48:43,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:43,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197258115] [2023-11-23 06:48:43,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197258115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:43,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:48:43,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 06:48:43,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770342764] [2023-11-23 06:48:43,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:43,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:48:43,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:43,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:48:43,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:48:43,833 INFO L87 Difference]: Start difference. First operand 602 states and 820 transitions. Second operand has 12 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 06:48:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:46,940 INFO L93 Difference]: Finished difference Result 642 states and 869 transitions. [2023-11-23 06:48:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:48:46,941 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 137 [2023-11-23 06:48:46,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:46,947 INFO L225 Difference]: With dead ends: 642 [2023-11-23 06:48:46,947 INFO L226 Difference]: Without dead ends: 640 [2023-11-23 06:48:46,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:48:46,948 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 249 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:46,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 743 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 06:48:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-11-23 06:48:46,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 632. [2023-11-23 06:48:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 424 states have (on average 1.1981132075471699) internal successors, (508), 433 states have internal predecessors, (508), 154 states have call successors, (154), 45 states have call predecessors, (154), 53 states have return successors, (194), 153 states have call predecessors, (194), 150 states have call successors, (194) [2023-11-23 06:48:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 856 transitions. [2023-11-23 06:48:46,998 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 856 transitions. Word has length 137 [2023-11-23 06:48:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:46,998 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 856 transitions. [2023-11-23 06:48:46,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 06:48:46,999 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 856 transitions. [2023-11-23 06:48:47,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-23 06:48:47,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:47,000 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:47,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 06:48:47,001 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:47,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:47,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1933437383, now seen corresponding path program 1 times [2023-11-23 06:48:47,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:47,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493147669] [2023-11-23 06:48:47,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:47,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:48:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 06:48:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:48:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:48:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 06:48:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 06:48:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-23 06:48:47,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:47,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493147669] [2023-11-23 06:48:47,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493147669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:47,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:48:47,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 06:48:47,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775661707] [2023-11-23 06:48:47,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:47,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:48:47,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:47,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:48:47,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:48:47,861 INFO L87 Difference]: Start difference. First operand 632 states and 856 transitions. Second operand has 10 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 06:48:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:49,860 INFO L93 Difference]: Finished difference Result 658 states and 885 transitions. [2023-11-23 06:48:49,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:48:49,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2023-11-23 06:48:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:49,864 INFO L225 Difference]: With dead ends: 658 [2023-11-23 06:48:49,864 INFO L226 Difference]: Without dead ends: 656 [2023-11-23 06:48:49,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:48:49,868 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 144 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:49,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 649 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 06:48:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-11-23 06:48:49,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 650. [2023-11-23 06:48:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 435 states have (on average 1.193103448275862) internal successors, (519), 445 states have internal predecessors, (519), 157 states have call successors, (157), 48 states have call predecessors, (157), 57 states have return successors, (199), 156 states have call predecessors, (199), 153 states have call successors, (199) [2023-11-23 06:48:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 875 transitions. [2023-11-23 06:48:49,923 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 875 transitions. Word has length 140 [2023-11-23 06:48:49,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:49,923 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 875 transitions. [2023-11-23 06:48:49,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 06:48:49,923 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 875 transitions. [2023-11-23 06:48:49,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 06:48:49,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:49,925 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:49,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 06:48:49,926 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:49,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:49,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1719874975, now seen corresponding path program 1 times [2023-11-23 06:48:49,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:49,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259654436] [2023-11-23 06:48:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:49,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 06:48:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 06:48:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 06:48:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 06:48:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 06:48:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 06:48:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 06:48:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-11-23 06:48:50,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:50,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259654436] [2023-11-23 06:48:50,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259654436] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:50,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074668183] [2023-11-23 06:48:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:50,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:50,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:50,576 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 06:48:50,577 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 06:48:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:51,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:48:51,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-23 06:48:51,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:51,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074668183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:51,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:51,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-23 06:48:51,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035317334] [2023-11-23 06:48:51,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:51,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:48:51,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:51,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:48:51,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:48:51,042 INFO L87 Difference]: Start difference. First operand 650 states and 875 transitions. Second operand has 9 states, 7 states have (on average 11.571428571428571) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 06:48:51,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:51,637 INFO L93 Difference]: Finished difference Result 1243 states and 1669 transitions. [2023-11-23 06:48:51,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:48:51,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.571428571428571) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2023-11-23 06:48:51,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:51,641 INFO L225 Difference]: With dead ends: 1243 [2023-11-23 06:48:51,641 INFO L226 Difference]: Without dead ends: 674 [2023-11-23 06:48:51,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:48:51,643 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 13 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:51,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1331 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:48:51,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-11-23 06:48:51,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 666. [2023-11-23 06:48:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 447 states have (on average 1.1879194630872483) internal successors, (531), 461 states have internal predecessors, (531), 157 states have call successors, (157), 48 states have call predecessors, (157), 61 states have return successors, (210), 156 states have call predecessors, (210), 153 states have call successors, (210) [2023-11-23 06:48:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 898 transitions. [2023-11-23 06:48:51,693 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 898 transitions. Word has length 139 [2023-11-23 06:48:51,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:51,693 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 898 transitions. [2023-11-23 06:48:51,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.571428571428571) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 06:48:51,694 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 898 transitions. [2023-11-23 06:48:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 06:48:51,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:51,695 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:51,718 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 06:48:51,908 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,SelfDestructingSolverStorable16 [2023-11-23 06:48:51,908 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:51,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:51,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1263725732, now seen corresponding path program 1 times [2023-11-23 06:48:51,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:51,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406670607] [2023-11-23 06:48:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:51,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:48:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:48:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 06:48:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:48:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 06:48:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 06:48:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-23 06:48:52,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:52,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406670607] [2023-11-23 06:48:52,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406670607] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:52,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650342845] [2023-11-23 06:48:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:52,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:52,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:52,408 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 06:48:52,409 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 06:48:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:52,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-23 06:48:52,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:52,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:48:52,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:48:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 06:48:53,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:53,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650342845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:53,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:53,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2023-11-23 06:48:53,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289619569] [2023-11-23 06:48:53,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:53,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:48:53,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:53,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:48:53,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:48:53,127 INFO L87 Difference]: Start difference. First operand 666 states and 898 transitions. Second operand has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 06:48:54,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:54,914 INFO L93 Difference]: Finished difference Result 1952 states and 2641 transitions. [2023-11-23 06:48:54,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 06:48:54,914 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 141 [2023-11-23 06:48:54,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:54,921 INFO L225 Difference]: With dead ends: 1952 [2023-11-23 06:48:54,922 INFO L226 Difference]: Without dead ends: 1375 [2023-11-23 06:48:54,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-11-23 06:48:54,925 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 173 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:54,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1101 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 06:48:54,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2023-11-23 06:48:55,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1229. [2023-11-23 06:48:55,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 833 states have (on average 1.190876350540216) internal successors, (992), 864 states have internal predecessors, (992), 284 states have call successors, (284), 83 states have call predecessors, (284), 111 states have return successors, (403), 281 states have call predecessors, (403), 277 states have call successors, (403) [2023-11-23 06:48:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1679 transitions. [2023-11-23 06:48:55,056 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1679 transitions. Word has length 141 [2023-11-23 06:48:55,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:55,056 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1679 transitions. [2023-11-23 06:48:55,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 06:48:55,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1679 transitions. [2023-11-23 06:48:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 06:48:55,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:55,059 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:55,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 06:48:55,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 06:48:55,275 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:55,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:55,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1973403486, now seen corresponding path program 1 times [2023-11-23 06:48:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:55,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397158173] [2023-11-23 06:48:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:55,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:48:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:48:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 06:48:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:48:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 06:48:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 06:48:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-23 06:48:55,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:55,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397158173] [2023-11-23 06:48:55,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397158173] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:55,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918718132] [2023-11-23 06:48:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:55,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:55,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:55,498 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:48:55,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 06:48:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:55,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:48:55,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-23 06:48:55,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:55,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918718132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:55,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:55,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 06:48:55,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377118313] [2023-11-23 06:48:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:55,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:48:55,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:55,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:48:55,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:48:55,971 INFO L87 Difference]: Start difference. First operand 1229 states and 1679 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 06:48:56,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:56,362 INFO L93 Difference]: Finished difference Result 2272 states and 3062 transitions. [2023-11-23 06:48:56,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:48:56,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2023-11-23 06:48:56,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:56,368 INFO L225 Difference]: With dead ends: 2272 [2023-11-23 06:48:56,368 INFO L226 Difference]: Without dead ends: 1170 [2023-11-23 06:48:56,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:48:56,374 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 6 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:56,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 526 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:48:56,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-11-23 06:48:56,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1103. [2023-11-23 06:48:56,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 753 states have (on average 1.1859229747675963) internal successors, (893), 779 states have internal predecessors, (893), 245 states have call successors, (245), 81 states have call predecessors, (245), 104 states have return successors, (318), 242 states have call predecessors, (318), 238 states have call successors, (318) [2023-11-23 06:48:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1456 transitions. [2023-11-23 06:48:56,500 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1456 transitions. Word has length 141 [2023-11-23 06:48:56,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:56,501 INFO L495 AbstractCegarLoop]: Abstraction has 1103 states and 1456 transitions. [2023-11-23 06:48:56,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 06:48:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1456 transitions. [2023-11-23 06:48:56,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-23 06:48:56,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:56,504 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:56,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 06:48:56,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:56,718 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:56,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash 903228141, now seen corresponding path program 1 times [2023-11-23 06:48:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:56,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121104659] [2023-11-23 06:48:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:56,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:48:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 06:48:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:48:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:48:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 06:48:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 06:48:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 06:48:59,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:59,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121104659] [2023-11-23 06:48:59,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121104659] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:59,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831044191] [2023-11-23 06:48:59,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:59,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:59,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:59,885 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:48:59,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 06:49:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:01,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 2871 conjuncts, 84 conjunts are in the unsatisfiable core [2023-11-23 06:49:01,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:02,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-23 06:49:02,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-23 06:49:02,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:49:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 72 proven. 21 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 06:49:02,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:49:03,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 40 [2023-11-23 06:49:03,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-11-23 06:49:03,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-11-23 06:49:03,372 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 06:49:03,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2023-11-23 06:49:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-23 06:49:03,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831044191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:49:03,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:49:03,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 38 [2023-11-23 06:49:03,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136538881] [2023-11-23 06:49:03,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:49:03,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-23 06:49:03,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:03,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-23 06:49:03,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1270, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 06:49:03,405 INFO L87 Difference]: Start difference. First operand 1103 states and 1456 transitions. Second operand has 38 states, 36 states have (on average 4.138888888888889) internal successors, (149), 36 states have internal predecessors, (149), 11 states have call successors, (39), 5 states have call predecessors, (39), 7 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) [2023-11-23 06:49:17,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:17,194 INFO L93 Difference]: Finished difference Result 2920 states and 3856 transitions. [2023-11-23 06:49:17,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-23 06:49:17,195 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 4.138888888888889) internal successors, (149), 36 states have internal predecessors, (149), 11 states have call successors, (39), 5 states have call predecessors, (39), 7 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) Word has length 144 [2023-11-23 06:49:17,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:17,202 INFO L225 Difference]: With dead ends: 2920 [2023-11-23 06:49:17,202 INFO L226 Difference]: Without dead ends: 2267 [2023-11-23 06:49:17,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 286 SyntacticMatches, 29 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2425 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=822, Invalid=7188, Unknown=0, NotChecked=0, Total=8010 [2023-11-23 06:49:17,206 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 571 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 6052 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 6375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 6052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:17,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1595 Invalid, 6375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 6052 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-23 06:49:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2023-11-23 06:49:17,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1751. [2023-11-23 06:49:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1248 states have (on average 1.1979166666666667) internal successors, (1495), 1291 states have internal predecessors, (1495), 345 states have call successors, (345), 121 states have call predecessors, (345), 157 states have return successors, (442), 338 states have call predecessors, (442), 335 states have call successors, (442) [2023-11-23 06:49:17,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2282 transitions. [2023-11-23 06:49:17,366 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2282 transitions. Word has length 144 [2023-11-23 06:49:17,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:17,367 INFO L495 AbstractCegarLoop]: Abstraction has 1751 states and 2282 transitions. [2023-11-23 06:49:17,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 4.138888888888889) internal successors, (149), 36 states have internal predecessors, (149), 11 states have call successors, (39), 5 states have call predecessors, (39), 7 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) [2023-11-23 06:49:17,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2282 transitions. [2023-11-23 06:49:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-23 06:49:17,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:17,370 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:17,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 06:49:17,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-23 06:49:17,588 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:17,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:17,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1604292719, now seen corresponding path program 1 times [2023-11-23 06:49:17,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:17,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052576271] [2023-11-23 06:49:17,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:17,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:49:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:49:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:49:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:49:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:49:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:18,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 06:49:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:49:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:49:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:18,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:49:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 06:49:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 06:49:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-23 06:49:18,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:18,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052576271] [2023-11-23 06:49:18,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052576271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:18,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:49:18,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:49:18,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512706755] [2023-11-23 06:49:18,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:18,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:49:18,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:18,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:49:18,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:49:18,257 INFO L87 Difference]: Start difference. First operand 1751 states and 2282 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 06:49:20,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:20,109 INFO L93 Difference]: Finished difference Result 3643 states and 4832 transitions. [2023-11-23 06:49:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:49:20,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 144 [2023-11-23 06:49:20,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:20,126 INFO L225 Difference]: With dead ends: 3643 [2023-11-23 06:49:20,126 INFO L226 Difference]: Without dead ends: 1911 [2023-11-23 06:49:20,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:49:20,132 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 95 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:20,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 350 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 06:49:20,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2023-11-23 06:49:20,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1747. [2023-11-23 06:49:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1244 states have (on average 1.1913183279742765) internal successors, (1482), 1287 states have internal predecessors, (1482), 345 states have call successors, (345), 121 states have call predecessors, (345), 157 states have return successors, (442), 338 states have call predecessors, (442), 335 states have call successors, (442) [2023-11-23 06:49:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2269 transitions. [2023-11-23 06:49:20,378 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2269 transitions. Word has length 144 [2023-11-23 06:49:20,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:20,378 INFO L495 AbstractCegarLoop]: Abstraction has 1747 states and 2269 transitions. [2023-11-23 06:49:20,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 06:49:20,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2269 transitions. [2023-11-23 06:49:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-23 06:49:20,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:20,381 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:20,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 06:49:20,381 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:20,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:20,381 INFO L85 PathProgramCache]: Analyzing trace with hash -658488973, now seen corresponding path program 1 times [2023-11-23 06:49:20,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:20,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020286506] [2023-11-23 06:49:20,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:20,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:49:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:49:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:49:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:49:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:49:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 06:49:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:49:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:49:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:49:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 06:49:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 06:49:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-23 06:49:23,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:23,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020286506] [2023-11-23 06:49:23,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020286506] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:23,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142257604] [2023-11-23 06:49:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:23,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:23,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:23,521 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:49:23,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 06:49:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:24,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 2874 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-23 06:49:24,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:24,239 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 06:49:24,251 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 06:49:24,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-23 06:49:25,093 WARN L876 $PredicateComparison]: unable to prove that (exists ((|aws_add_size_checked_aws_add_u64_checked_~r#1.offset| Int)) (and (= |c_#memory_int#8| (store |c_old(#memory_int#8)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_int#8)| |c_aws_add_size_checked_#in~r#1.base|) |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| (select (select |c_#memory_int#8| |c_aws_add_size_checked_#in~r#1.base|) |aws_add_size_checked_aws_add_u64_checked_~r#1.offset|)))) (<= |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| |c_aws_add_size_checked_#in~r#1.offset|))) is different from true [2023-11-23 06:49:25,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 06:49:25,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-23 06:49:25,374 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 67 proven. 26 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 06:49:25,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:49:59,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142257604] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:59,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:49:59,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 28 [2023-11-23 06:49:59,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846442360] [2023-11-23 06:49:59,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:49:59,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-23 06:49:59,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:59,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-23 06:49:59,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=941, Unknown=6, NotChecked=62, Total=1122 [2023-11-23 06:49:59,133 INFO L87 Difference]: Start difference. First operand 1747 states and 2269 transitions. Second operand has 28 states, 28 states have (on average 4.892857142857143) internal successors, (137), 25 states have internal predecessors, (137), 8 states have call successors, (33), 6 states have call predecessors, (33), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-23 06:50:02,561 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 06:50:06,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:09,195 WARN L539 Checker$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 06:50:11,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:23,219 WARN L539 Checker$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 06:50:34,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:36,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:42,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:46,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:52,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:55,974 WARN L539 Checker$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 06:50:58,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:04,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:51:04,255 INFO L93 Difference]: Finished difference Result 4996 states and 6605 transitions. [2023-11-23 06:51:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-23 06:51:04,255 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.892857142857143) internal successors, (137), 25 states have internal predecessors, (137), 8 states have call successors, (33), 6 states have call predecessors, (33), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) Word has length 144 [2023-11-23 06:51:04,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:51:04,275 INFO L225 Difference]: With dead ends: 4996 [2023-11-23 06:51:04,276 INFO L226 Difference]: Without dead ends: 3322 [2023-11-23 06:51:04,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 172 SyntacticMatches, 22 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 49.2s TimeCoverageRelationStatistics Valid=378, Invalid=2169, Unknown=7, NotChecked=98, Total=2652 [2023-11-23 06:51:04,291 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 633 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 2648 mSolverCounterSat, 381 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 3422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 2648 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 381 IncrementalHoareTripleChecker+Unchecked, 49.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:51:04,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 729 Invalid, 3422 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [381 Valid, 2648 Invalid, 12 Unknown, 381 Unchecked, 49.9s Time] [2023-11-23 06:51:04,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2023-11-23 06:51:04,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 3197. [2023-11-23 06:51:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3197 states, 2267 states have (on average 1.1755624172915748) internal successors, (2665), 2347 states have internal predecessors, (2665), 640 states have call successors, (640), 220 states have call predecessors, (640), 289 states have return successors, (863), 629 states have call predecessors, (863), 621 states have call successors, (863) [2023-11-23 06:51:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4168 transitions. [2023-11-23 06:51:04,657 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4168 transitions. Word has length 144 [2023-11-23 06:51:04,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:51:04,658 INFO L495 AbstractCegarLoop]: Abstraction has 3197 states and 4168 transitions. [2023-11-23 06:51:04,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.892857142857143) internal successors, (137), 25 states have internal predecessors, (137), 8 states have call successors, (33), 6 states have call predecessors, (33), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-23 06:51:04,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4168 transitions. [2023-11-23 06:51:04,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-23 06:51:04,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:51:04,667 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:51:04,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 06:51:04,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:51:04,883 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:51:04,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:51:04,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1741882946, now seen corresponding path program 1 times [2023-11-23 06:51:04,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:51:04,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597856966] [2023-11-23 06:51:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:51:04,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:51:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:06,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:51:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:07,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:51:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:07,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:07,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:51:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:51:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:51:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:51:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:07,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:51:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:07,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:51:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:07,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:51:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:07,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 06:51:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:07,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:51:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:07,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:51:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:07,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:51:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:08,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 06:51:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:08,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:51:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:08,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 06:51:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:08,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 06:51:08,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:51:08,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597856966] [2023-11-23 06:51:08,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597856966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:51:08,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:51:08,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 06:51:08,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301967299] [2023-11-23 06:51:08,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:51:08,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 06:51:08,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:51:08,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 06:51:08,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-23 06:51:08,537 INFO L87 Difference]: Start difference. First operand 3197 states and 4168 transitions. Second operand has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 9 states have internal predecessors, (63), 6 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-23 06:51:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:51:19,508 INFO L93 Difference]: Finished difference Result 3247 states and 4217 transitions. [2023-11-23 06:51:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:51:19,509 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 9 states have internal predecessors, (63), 6 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 146 [2023-11-23 06:51:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:51:19,520 INFO L225 Difference]: With dead ends: 3247 [2023-11-23 06:51:19,520 INFO L226 Difference]: Without dead ends: 3245 [2023-11-23 06:51:19,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-11-23 06:51:19,525 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 159 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:51:19,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 485 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-11-23 06:51:19,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2023-11-23 06:51:19,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3245. [2023-11-23 06:51:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3245 states, 2303 states have (on average 1.172818063395571) internal successors, (2701), 2383 states have internal predecessors, (2701), 640 states have call successors, (640), 232 states have call predecessors, (640), 301 states have return successors, (863), 629 states have call predecessors, (863), 621 states have call successors, (863) [2023-11-23 06:51:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3245 states to 3245 states and 4204 transitions. [2023-11-23 06:51:19,870 INFO L78 Accepts]: Start accepts. Automaton has 3245 states and 4204 transitions. Word has length 146 [2023-11-23 06:51:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:51:19,870 INFO L495 AbstractCegarLoop]: Abstraction has 3245 states and 4204 transitions. [2023-11-23 06:51:19,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 9 states have internal predecessors, (63), 6 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-23 06:51:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3245 states and 4204 transitions. [2023-11-23 06:51:19,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-23 06:51:19,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:51:19,875 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:19,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 06:51:19,876 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:51:19,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:51:19,876 INFO L85 PathProgramCache]: Analyzing trace with hash -798527699, now seen corresponding path program 1 times [2023-11-23 06:51:19,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:51:19,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199671448] [2023-11-23 06:51:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:51:19,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:51:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:51:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:24,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:51:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:24,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:24,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:51:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:25,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:51:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:25,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:51:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:25,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:51:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:25,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:51:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:25,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:51:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:25,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:51:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:25,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 06:51:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:25,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:51:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:25,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:51:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:25,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:51:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:26,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 06:51:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:27,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:27,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 06:51:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-23 06:51:29,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:51:29,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199671448] [2023-11-23 06:51:29,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199671448] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:51:29,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214022393] [2023-11-23 06:51:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:51:29,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:51:29,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:51:29,021 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:51:29,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 06:51:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:31,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 199 conjunts are in the unsatisfiable core [2023-11-23 06:51:31,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:51:35,871 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-23 06:51:35,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2023-11-23 06:51:41,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 06:51:41,448 INFO L349 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-11-23 06:51:41,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 75 Killed by 15