./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_hash_table_clear_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_hash_table_clear_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 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:18:21,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:18:21,985 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:18:21,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:18:21,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:18:22,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:18:22,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:18:22,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:18:22,014 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:18:22,017 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:18:22,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:18:22,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:18:22,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:18:22,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:18:22,019 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:18:22,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:18:22,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:18:22,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:18:22,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:18:22,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:18:22,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:18:22,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:18:22,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:18:22,021 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:18:22,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:18:22,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:18:22,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:18:22,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:18:22,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:18:22,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:18:22,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:18:22,024 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:18:22,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:18:22,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:18:22,024 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:18:22,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:18:22,025 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:18:22,025 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:18:22,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:18:22,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:18:22,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:18:22,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:18:22,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:18:22,263 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:18:22,263 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:18:22,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_hash_table_clear_harness.i [2023-11-23 07:18:23,230 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:18:23,674 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:18:23,674 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_hash_table_clear_harness.i [2023-11-23 07:18:23,702 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49792fb39/fe1d6ef7f312498d86846612925b4c04/FLAG9c513432a [2023-11-23 07:18:23,714 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49792fb39/fe1d6ef7f312498d86846612925b4c04 [2023-11-23 07:18:23,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:18:23,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:18:23,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:18:23,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:18:23,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:18:23,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:18:23" (1/1) ... [2023-11-23 07:18:23,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa07611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:23, skipping insertion in model container [2023-11-23 07:18:23,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:18:23" (1/1) ... [2023-11-23 07:18:23,799 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:18:23,992 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_hash_table_clear_harness.i[4494,4507] [2023-11-23 07:18:24,000 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_hash_table_clear_harness.i[4554,4567] [2023-11-23 07:18:24,671 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:24,672 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:24,672 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:24,673 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:24,673 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:24,681 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:24,682 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:24,683 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:24,684 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:24,685 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:24,685 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:24,686 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:24,686 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:24,999 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:18:25,001 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:18:25,002 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:18:25,003 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:18:25,006 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:18:25,007 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:18:25,008 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:18:25,009 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:18:25,010 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:18:25,016 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:18:25,338 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,339 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,357 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,358 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,362 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,362 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,374 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,374 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,375 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,375 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,376 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,376 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,376 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:18:25,445 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:18:25,460 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_hash_table_clear_harness.i[4494,4507] [2023-11-23 07:18:25,461 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_hash_table_clear_harness.i[4554,4567] [2023-11-23 07:18:25,489 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,489 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,489 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,490 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,490 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,498 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,498 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,498 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,521 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:18:25,522 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:18:25,523 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:18:25,523 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:18:25,524 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:18:25,524 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:18:25,525 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:18:25,525 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:18:25,525 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:18:25,526 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:18:25,558 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7585-7596] [2023-11-23 07:18:25,658 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,659 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,663 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,664 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,665 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,666 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,674 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,674 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,675 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,675 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,675 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,675 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,675 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:18:25,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:18:25,823 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,824 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,824 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,824 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,824 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,824 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,824 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,824 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,825 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,825 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,825 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,825 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,825 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,825 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,825 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,825 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,825 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,826 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:18:25,832 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:18:25,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25 WrapperNode [2023-11-23 07:18:25,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:18:25,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:18:25,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:18:25,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:18:25,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25" (1/1) ... [2023-11-23 07:18:25,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25" (1/1) ... [2023-11-23 07:18:25,950 INFO L138 Inliner]: procedures = 773, calls = 2441, calls flagged for inlining = 68, calls inlined = 13, statements flattened = 611 [2023-11-23 07:18:25,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:18:25,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:18:25,951 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:18:25,951 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:18:25,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25" (1/1) ... [2023-11-23 07:18:25,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25" (1/1) ... [2023-11-23 07:18:25,970 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25" (1/1) ... [2023-11-23 07:18:26,040 INFO L188 MemorySlicer]: Split 293 memory accesses to 9 slices as follows [8, 2, 5, 34, 2, 236, 1, 2, 3]. 81 percent of accesses are in the largest equivalence class. The 246 initializations are split as follows [0, 2, 5, 0, 0, 236, 0, 0, 3]. The 9 writes are split as follows [1, 0, 0, 5, 1, 0, 1, 1, 0]. [2023-11-23 07:18:26,040 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25" (1/1) ... [2023-11-23 07:18:26,041 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25" (1/1) ... [2023-11-23 07:18:26,097 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25" (1/1) ... [2023-11-23 07:18:26,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25" (1/1) ... [2023-11-23 07:18:26,116 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25" (1/1) ... [2023-11-23 07:18:26,120 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25" (1/1) ... [2023-11-23 07:18:26,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:18:26,135 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:18:26,135 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:18:26,135 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:18:26,136 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25" (1/1) ... [2023-11-23 07:18:26,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:18:26,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:18:26,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 07:18:26,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 07:18:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2023-11-23 07:18:26,201 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2023-11-23 07:18:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-23 07:18:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-23 07:18:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-23 07:18:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-23 07:18:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-23 07:18:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-23 07:18:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-23 07:18:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-23 07:18:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-23 07:18:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:18:26,203 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:18:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:18:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:18:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:18:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:18:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 07:18:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 07:18:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 07:18:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 07:18:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 07:18:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 07:18:26,206 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 07:18:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:18:26,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:18:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-23 07:18:26,206 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-23 07:18:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_clear [2023-11-23 07:18:26,206 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_clear [2023-11-23 07:18:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:18:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:18:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:18:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:18:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:18:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:18:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:18:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:18:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 07:18:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 07:18:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-23 07:18:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:18:26,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:18:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:18:26,209 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:18:26,209 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 07:18:26,209 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 07:18:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:18:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 07:18:26,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 07:18:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 07:18:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 07:18:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 07:18:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 07:18:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 07:18:26,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 07:18:26,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 07:18:26,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 07:18:26,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-23 07:18:26,214 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 07:18:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 07:18:26,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 07:18:26,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 07:18:26,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 07:18:26,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 07:18:26,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 07:18:26,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 07:18:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 07:18:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 07:18:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 07:18:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 07:18:26,220 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 07:18:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-23 07:18:26,220 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-23 07:18:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:18:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-23 07:18:26,221 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-23 07:18:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 07:18:26,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 07:18:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:18:26,221 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:18:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-23 07:18:26,221 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-23 07:18:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:18:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:18:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:18:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:18:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:18:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:18:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 07:18:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 07:18:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-23 07:18:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 07:18:26,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 07:18:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 07:18:26,223 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 07:18:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:18:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:18:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:18:26,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:18:26,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:18:26,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 07:18:26,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 07:18:26,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 07:18:26,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 07:18:26,536 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:18:26,539 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:18:27,102 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:18:27,188 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:18:27,188 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 07:18:27,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:18:27 BoogieIcfgContainer [2023-11-23 07:18:27,189 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:18:27,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:18:27,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:18:27,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:18:27,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:18:23" (1/3) ... [2023-11-23 07:18:27,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e87a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:18:27, skipping insertion in model container [2023-11-23 07:18:27,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:18:25" (2/3) ... [2023-11-23 07:18:27,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e87a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:18:27, skipping insertion in model container [2023-11-23 07:18:27,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:18:27" (3/3) ... [2023-11-23 07:18:27,197 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clear_harness.i [2023-11-23 07:18:27,209 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:18:27,210 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:18:27,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:18:27,262 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;@29c53076, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:18:27,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:18:27,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 89 states have internal predecessors, (111), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 07:18:27,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 07:18:27,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:18:27,283 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:18:27,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:18:27,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:18:27,289 INFO L85 PathProgramCache]: Analyzing trace with hash 329562368, now seen corresponding path program 1 times [2023-11-23 07:18:27,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:18:27,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595048545] [2023-11-23 07:18:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:27,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:18:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:27,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:18:27,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595048545] [2023-11-23 07:18:27,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 07:18:27,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755480295] [2023-11-23 07:18:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:27,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:27,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:18:27,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:18:27,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 07:18:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:28,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 07:18:28,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:18:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 07:18:28,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:18:28,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755480295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:18:28,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:18:28,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 07:18:28,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899442688] [2023-11-23 07:18:28,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:18:28,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 07:18:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:28,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 07:18:28,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:18:28,310 INFO L87 Difference]: Start difference. First operand has 149 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 89 states have internal predecessors, (111), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 07:18:28,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:18:28,452 INFO L93 Difference]: Finished difference Result 294 states and 407 transitions. [2023-11-23 07:18:28,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 07:18:28,454 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 126 [2023-11-23 07:18:28,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:18:28,461 INFO L225 Difference]: With dead ends: 294 [2023-11-23 07:18:28,461 INFO L226 Difference]: Without dead ends: 146 [2023-11-23 07:18:28,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:18:28,467 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:18:28,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:18:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-23 07:18:28,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-11-23 07:18:28,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 86 states have (on average 1.197674418604651) internal successors, (103), 87 states have internal predecessors, (103), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-23 07:18:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 184 transitions. [2023-11-23 07:18:28,513 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 184 transitions. Word has length 126 [2023-11-23 07:18:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:18:28,515 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 184 transitions. [2023-11-23 07:18:28,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 07:18:28,515 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 184 transitions. [2023-11-23 07:18:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 07:18:28,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:18:28,518 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:18:28,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 07:18:28,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 07:18:28,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:18:28,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:18:28,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1283778120, now seen corresponding path program 1 times [2023-11-23 07:18:28,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:18:28,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293516286] [2023-11-23 07:18:28,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:28,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:18:28,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:18:28,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281075918] [2023-11-23 07:18:28,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:28,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:28,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:18:28,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:18:28,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 07:18:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:29,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 07:18:29,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:18:29,342 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-23 07:18:29,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:18:29,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:18:29,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293516286] [2023-11-23 07:18:29,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:18:29,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281075918] [2023-11-23 07:18:29,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281075918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:18:29,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:18:29,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 07:18:29,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922196391] [2023-11-23 07:18:29,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:18:29,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 07:18:29,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:29,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 07:18:29,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 07:18:29,344 INFO L87 Difference]: Start difference. First operand 146 states and 184 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 07:18:29,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:18:29,487 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2023-11-23 07:18:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 07:18:29,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 126 [2023-11-23 07:18:29,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:18:29,490 INFO L225 Difference]: With dead ends: 209 [2023-11-23 07:18:29,490 INFO L226 Difference]: Without dead ends: 147 [2023-11-23 07:18:29,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 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 07:18:29,491 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:18:29,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 324 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:18:29,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-23 07:18:29,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-23 07:18:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 88 states have internal predecessors, (104), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-23 07:18:29,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 185 transitions. [2023-11-23 07:18:29,504 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 185 transitions. Word has length 126 [2023-11-23 07:18:29,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:18:29,506 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 185 transitions. [2023-11-23 07:18:29,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 07:18:29,506 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 185 transitions. [2023-11-23 07:18:29,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 07:18:29,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:18:29,508 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:18:29,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:18:29,716 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,SelfDestructingSolverStorable1 [2023-11-23 07:18:29,716 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:18:29,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:18:29,717 INFO L85 PathProgramCache]: Analyzing trace with hash 262709766, now seen corresponding path program 1 times [2023-11-23 07:18:29,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:18:29,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643214048] [2023-11-23 07:18:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:29,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:18:29,781 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:18:29,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572773507] [2023-11-23 07:18:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:29,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:29,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:18:29,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:18:29,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 07:18:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:30,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:18:30,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:18:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-23 07:18:30,316 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:18:30,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:18:30,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643214048] [2023-11-23 07:18:30,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:18:30,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572773507] [2023-11-23 07:18:30,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572773507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:18:30,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:18:30,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:18:30,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389878869] [2023-11-23 07:18:30,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:18:30,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:18:30,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:30,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:18:30,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:18:30,323 INFO L87 Difference]: Start difference. First operand 147 states and 185 transitions. Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 07:18:30,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:18:30,513 INFO L93 Difference]: Finished difference Result 263 states and 331 transitions. [2023-11-23 07:18:30,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:18:30,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 126 [2023-11-23 07:18:30,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:18:30,521 INFO L225 Difference]: With dead ends: 263 [2023-11-23 07:18:30,522 INFO L226 Difference]: Without dead ends: 151 [2023-11-23 07:18:30,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 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 07:18:30,526 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:18:30,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 648 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:18:30,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-23 07:18:30,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-23 07:18:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 91 states have internal predecessors, (107), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2023-11-23 07:18:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 189 transitions. [2023-11-23 07:18:30,546 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 189 transitions. Word has length 126 [2023-11-23 07:18:30,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:18:30,546 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 189 transitions. [2023-11-23 07:18:30,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 07:18:30,547 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 189 transitions. [2023-11-23 07:18:30,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-23 07:18:30,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:18:30,548 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:18:30,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 07:18:30,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:30,767 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:18:30,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:18:30,767 INFO L85 PathProgramCache]: Analyzing trace with hash -684570453, now seen corresponding path program 1 times [2023-11-23 07:18:30,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:18:30,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563789529] [2023-11-23 07:18:30,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:30,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:18:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:18:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:31,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:18:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:31,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:18:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:18:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:18:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:18:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:18:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:18:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:18:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 07:18:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:18:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:18:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 07:18:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:18:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:18:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 07:18:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 07:18:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:18:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-23 07:18:32,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:18:32,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563789529] [2023-11-23 07:18:32,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563789529] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:18:32,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439112475] [2023-11-23 07:18:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:32,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:32,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:18:32,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:18:32,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 07:18:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:32,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 2655 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-23 07:18:32,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:18:32,886 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 07:18:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 07:18:33,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:18:33,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439112475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:18:33,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:18:33,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 20 [2023-11-23 07:18:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228240750] [2023-11-23 07:18:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:18:33,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 07:18:33,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:33,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 07:18:33,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2023-11-23 07:18:33,413 INFO L87 Difference]: Start difference. First operand 151 states and 189 transitions. Second operand has 13 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 5 states have call successors, (26), 4 states have call predecessors, (26), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-23 07:18:36,179 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 07:18:38,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:40,252 WARN L539 Checker$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 07:18:42,295 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 07:18:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:18:42,848 INFO L93 Difference]: Finished difference Result 271 states and 340 transitions. [2023-11-23 07:18:42,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 07:18:42,849 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 5 states have call successors, (26), 4 states have call predecessors, (26), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 130 [2023-11-23 07:18:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:18:42,851 INFO L225 Difference]: With dead ends: 271 [2023-11-23 07:18:42,851 INFO L226 Difference]: Without dead ends: 171 [2023-11-23 07:18:42,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 147 SyntacticMatches, 16 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2023-11-23 07:18:42,852 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 112 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 19 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:18:42,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1274 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 677 Invalid, 4 Unknown, 0 Unchecked, 9.3s Time] [2023-11-23 07:18:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-23 07:18:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2023-11-23 07:18:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 105 states have internal predecessors, (123), 41 states have call successors, (41), 21 states have call predecessors, (41), 23 states have return successors, (43), 41 states have call predecessors, (43), 40 states have call successors, (43) [2023-11-23 07:18:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 207 transitions. [2023-11-23 07:18:42,867 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 207 transitions. Word has length 130 [2023-11-23 07:18:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:18:42,868 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 207 transitions. [2023-11-23 07:18:42,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 5 states have call successors, (26), 4 states have call predecessors, (26), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-23 07:18:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 207 transitions. [2023-11-23 07:18:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-23 07:18:42,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:18:42,870 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:18:42,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 07:18:43,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:43,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:18:43,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:18:43,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1315558379, now seen corresponding path program 1 times [2023-11-23 07:18:43,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:18:43,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020263002] [2023-11-23 07:18:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:43,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:18:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:18:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:18:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:18:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:18:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:18:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:18:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:18:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:18:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:18:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 07:18:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:18:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:18:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 07:18:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:18:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:18:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 07:18:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 07:18:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:18:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-23 07:18:43,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:18:43,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020263002] [2023-11-23 07:18:43,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020263002] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:18:43,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057896803] [2023-11-23 07:18:43,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:43,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:43,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:18:43,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:18:43,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 07:18:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:44,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 2645 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:18:44,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:18:44,264 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-23 07:18:44,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:18:44,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057896803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:18:44,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:18:44,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 07:18:44,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635001045] [2023-11-23 07:18:44,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:18:44,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:18:44,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:44,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:18:44,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:18:44,267 INFO L87 Difference]: Start difference. First operand 168 states and 207 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 07:18:44,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:18:44,414 INFO L93 Difference]: Finished difference Result 276 states and 347 transitions. [2023-11-23 07:18:44,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:18:44,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 130 [2023-11-23 07:18:44,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:18:44,416 INFO L225 Difference]: With dead ends: 276 [2023-11-23 07:18:44,416 INFO L226 Difference]: Without dead ends: 172 [2023-11-23 07:18:44,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:18:44,417 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 15 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:18:44,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 456 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:18:44,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-23 07:18:44,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-11-23 07:18:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 108 states have internal predecessors, (125), 42 states have call successors, (42), 21 states have call predecessors, (42), 24 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2023-11-23 07:18:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 213 transitions. [2023-11-23 07:18:44,446 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 213 transitions. Word has length 130 [2023-11-23 07:18:44,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:18:44,446 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 213 transitions. [2023-11-23 07:18:44,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 07:18:44,447 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 213 transitions. [2023-11-23 07:18:44,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 07:18:44,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:18:44,449 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:18:44,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 07:18:44,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:44,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:18:44,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:18:44,661 INFO L85 PathProgramCache]: Analyzing trace with hash 456847922, now seen corresponding path program 1 times [2023-11-23 07:18:44,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:18:44,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113471649] [2023-11-23 07:18:44,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:44,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:18:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:18:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:18:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:18:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:18:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:18:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:18:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:18:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:18:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:18:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 07:18:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 07:18:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:18:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 07:18:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 07:18:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:18:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:18:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:18:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 07:18:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 07:18:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-23 07:18:45,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:18:45,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113471649] [2023-11-23 07:18:45,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113471649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:18:45,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143304193] [2023-11-23 07:18:45,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:45,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:45,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:18:45,559 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:18:45,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 07:18:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:18:45,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:18:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-23 07:18:46,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:18:46,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143304193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:18:46,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:18:46,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-23 07:18:46,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980260533] [2023-11-23 07:18:46,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:18:46,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:18:46,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:18:46,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:18:46,113 INFO L87 Difference]: Start difference. First operand 172 states and 213 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 07:18:46,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:18:46,467 INFO L93 Difference]: Finished difference Result 261 states and 324 transitions. [2023-11-23 07:18:46,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:18:46,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 136 [2023-11-23 07:18:46,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:18:46,471 INFO L225 Difference]: With dead ends: 261 [2023-11-23 07:18:46,471 INFO L226 Difference]: Without dead ends: 166 [2023-11-23 07:18:46,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:18:46,472 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 51 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:18:46,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 878 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:18:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-23 07:18:46,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-11-23 07:18:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 103 states have internal predecessors, (119), 41 states have call successors, (41), 21 states have call predecessors, (41), 23 states have return successors, (43), 41 states have call predecessors, (43), 40 states have call successors, (43) [2023-11-23 07:18:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 203 transitions. [2023-11-23 07:18:46,485 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 203 transitions. Word has length 136 [2023-11-23 07:18:46,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:18:46,486 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 203 transitions. [2023-11-23 07:18:46,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 07:18:46,486 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 203 transitions. [2023-11-23 07:18:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 07:18:46,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:18:46,487 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:18:46,504 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 07:18:46,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:46,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:18:46,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:18:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash 347328075, now seen corresponding path program 1 times [2023-11-23 07:18:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:18:46,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334179003] [2023-11-23 07:18:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:46,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:18:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:18:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:18:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:18:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:18:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:18:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:18:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:18:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:18:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:18:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 07:18:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 07:18:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:18:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 07:18:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 07:18:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:18:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:18:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:18:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:18:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 07:18:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 07:18:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-11-23 07:18:47,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:18:47,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334179003] [2023-11-23 07:18:47,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334179003] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:18:47,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534256319] [2023-11-23 07:18:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:47,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:47,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:18:47,550 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 07:18:47,565 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 07:18:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:48,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-23 07:18:48,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:18:48,110 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 07:18:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-23 07:18:48,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:18:48,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534256319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:18:48,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:18:48,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 20 [2023-11-23 07:18:48,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180499044] [2023-11-23 07:18:48,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:18:48,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:18:48,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:48,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:18:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2023-11-23 07:18:48,313 INFO L87 Difference]: Start difference. First operand 166 states and 203 transitions. Second operand has 12 states, 9 states have (on average 7.222222222222222) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-23 07:18:51,319 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 07:18:53,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:55,382 WARN L539 Checker$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 07:18:57,425 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 07:18:58,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:18:58,088 INFO L93 Difference]: Finished difference Result 273 states and 339 transitions. [2023-11-23 07:18:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 07:18:58,089 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.222222222222222) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 142 [2023-11-23 07:18:58,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:18:58,090 INFO L225 Difference]: With dead ends: 273 [2023-11-23 07:18:58,090 INFO L226 Difference]: Without dead ends: 171 [2023-11-23 07:18:58,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-11-23 07:18:58,091 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 102 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 13 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:18:58,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1159 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 659 Invalid, 4 Unknown, 0 Unchecked, 9.7s Time] [2023-11-23 07:18:58,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-23 07:18:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-11-23 07:18:58,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 104 states have (on average 1.1730769230769231) internal successors, (122), 107 states have internal predecessors, (122), 41 states have call successors, (41), 21 states have call predecessors, (41), 25 states have return successors, (47), 42 states have call predecessors, (47), 40 states have call successors, (47) [2023-11-23 07:18:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 210 transitions. [2023-11-23 07:18:58,125 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 210 transitions. Word has length 142 [2023-11-23 07:18:58,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:18:58,126 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 210 transitions. [2023-11-23 07:18:58,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.222222222222222) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-23 07:18:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 210 transitions. [2023-11-23 07:18:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-23 07:18:58,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:18:58,129 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:18:58,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 07:18:58,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:58,344 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:18:58,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:18:58,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1758543307, now seen corresponding path program 1 times [2023-11-23 07:18:58,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:18:58,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674956118] [2023-11-23 07:18:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:58,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:18:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:58,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:58,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:18:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:18:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:18:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:18:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:18:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:18:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:18:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:18:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:18:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:18:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 07:18:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 07:18:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:18:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 07:18:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:18:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:18:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:18:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:18:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:18:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:18:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 07:18:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 07:18:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-23 07:18:59,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:18:59,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674956118] [2023-11-23 07:18:59,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674956118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:18:59,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:18:59,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 07:18:59,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635993666] [2023-11-23 07:18:59,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:18:59,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:18:59,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:59,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:18:59,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:18:59,357 INFO L87 Difference]: Start difference. First operand 171 states and 210 transitions. Second operand has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (28), 7 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 07:19:01,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:19:01,586 INFO L93 Difference]: Finished difference Result 190 states and 232 transitions. [2023-11-23 07:19:01,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 07:19:01,586 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (28), 7 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 154 [2023-11-23 07:19:01,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:19:01,587 INFO L225 Difference]: With dead ends: 190 [2023-11-23 07:19:01,587 INFO L226 Difference]: Without dead ends: 188 [2023-11-23 07:19:01,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-11-23 07:19:01,588 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 127 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:19:01,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 488 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:19:01,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-23 07:19:01,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175. [2023-11-23 07:19:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 110 states have internal predecessors, (125), 41 states have call successors, (41), 22 states have call predecessors, (41), 26 states have return successors, (47), 42 states have call predecessors, (47), 40 states have call successors, (47) [2023-11-23 07:19:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 213 transitions. [2023-11-23 07:19:01,610 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 213 transitions. Word has length 154 [2023-11-23 07:19:01,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:19:01,611 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 213 transitions. [2023-11-23 07:19:01,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (28), 7 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 07:19:01,611 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 213 transitions. [2023-11-23 07:19:01,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-23 07:19:01,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:19:01,614 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:19:01,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 07:19:01,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:19:01,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:19:01,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1085444582, now seen corresponding path program 1 times [2023-11-23 07:19:01,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:19:01,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376862473] [2023-11-23 07:19:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:01,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:19:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:19:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:19:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:19:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:19:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:19:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:19:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:19:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:19:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:19:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:19:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 07:19:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 07:19:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:19:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 07:19:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:19:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:19:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:19:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:19:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:19:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 07:19:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 07:19:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 07:19:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 07:19:02,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:19:02,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376862473] [2023-11-23 07:19:02,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376862473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:19:02,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:19:02,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 07:19:02,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618150260] [2023-11-23 07:19:02,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:19:02,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:19:02,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:19:02,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:19:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:19:02,485 INFO L87 Difference]: Start difference. First operand 175 states and 213 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (30), 5 states have call predecessors, (30), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 07:19:04,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:19:04,735 INFO L93 Difference]: Finished difference Result 277 states and 339 transitions. [2023-11-23 07:19:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:19:04,736 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (30), 5 states have call predecessors, (30), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 154 [2023-11-23 07:19:04,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:19:04,737 INFO L225 Difference]: With dead ends: 277 [2023-11-23 07:19:04,737 INFO L226 Difference]: Without dead ends: 183 [2023-11-23 07:19:04,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:19:04,738 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 109 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:19:04,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 422 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:19:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-23 07:19:04,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 170. [2023-11-23 07:19:04,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 106 states have internal predecessors, (121), 41 states have call successors, (41), 22 states have call predecessors, (41), 24 states have return successors, (43), 41 states have call predecessors, (43), 40 states have call successors, (43) [2023-11-23 07:19:04,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 205 transitions. [2023-11-23 07:19:04,761 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 205 transitions. Word has length 154 [2023-11-23 07:19:04,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:19:04,762 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 205 transitions. [2023-11-23 07:19:04,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (30), 5 states have call predecessors, (30), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 07:19:04,763 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 205 transitions. [2023-11-23 07:19:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-23 07:19:04,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:19:04,764 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:19:04,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 07:19:04,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:19:04,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:19:04,765 INFO L85 PathProgramCache]: Analyzing trace with hash 449795928, now seen corresponding path program 1 times [2023-11-23 07:19:04,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:19:04,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154572788] [2023-11-23 07:19:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:04,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:19:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:19:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:19:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:19:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:19:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:19:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:19:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:19:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:19:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:19:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:19:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 07:19:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 07:19:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:19:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 07:19:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:19:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:19:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:19:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:19:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:19:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:19:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 07:19:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 07:19:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-23 07:19:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-11-23 07:19:05,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:19:05,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154572788] [2023-11-23 07:19:05,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154572788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:19:05,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883411935] [2023-11-23 07:19:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:05,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:05,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:19:05,721 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 07:19:05,722 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 07:19:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:06,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 2778 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-23 07:19:06,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:19:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-23 07:19:06,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:19:06,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883411935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:19:06,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:19:06,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 17 [2023-11-23 07:19:06,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333030634] [2023-11-23 07:19:06,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:19:06,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:19:06,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:19:06,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:19:06,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:19:06,336 INFO L87 Difference]: Start difference. First operand 170 states and 205 transitions. Second operand has 12 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-23 07:19:06,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:19:06,869 INFO L93 Difference]: Finished difference Result 267 states and 322 transitions. [2023-11-23 07:19:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 07:19:06,870 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) Word has length 160 [2023-11-23 07:19:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:19:06,872 INFO L225 Difference]: With dead ends: 267 [2023-11-23 07:19:06,872 INFO L226 Difference]: Without dead ends: 180 [2023-11-23 07:19:06,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:19:06,873 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 3 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:19:06,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1605 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:19:06,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-23 07:19:06,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2023-11-23 07:19:06,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 109 states have (on average 1.1559633027522935) internal successors, (126), 112 states have internal predecessors, (126), 41 states have call successors, (41), 22 states have call predecessors, (41), 27 states have return successors, (48), 43 states have call predecessors, (48), 40 states have call successors, (48) [2023-11-23 07:19:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 215 transitions. [2023-11-23 07:19:06,894 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 215 transitions. Word has length 160 [2023-11-23 07:19:06,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:19:06,896 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 215 transitions. [2023-11-23 07:19:06,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-23 07:19:06,896 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 215 transitions. [2023-11-23 07:19:06,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-23 07:19:06,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:19:06,898 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:19:06,924 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 07:19:07,109 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,SelfDestructingSolverStorable9 [2023-11-23 07:19:07,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:19:07,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:19:07,110 INFO L85 PathProgramCache]: Analyzing trace with hash -522864941, now seen corresponding path program 1 times [2023-11-23 07:19:07,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:19:07,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043939979] [2023-11-23 07:19:07,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:07,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:19:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:19:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:19:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:19:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:19:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:19:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:19:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:19:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:19:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:19:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:19:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 07:19:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 07:19:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:19:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 07:19:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:19:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:07,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:19:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:08,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:19:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:19:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:19:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:08,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:19:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 07:19:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:08,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 07:19:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:08,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-23 07:19:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:08,058 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-11-23 07:19:08,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:19:08,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043939979] [2023-11-23 07:19:08,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043939979] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:19:08,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522910590] [2023-11-23 07:19:08,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:08,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:08,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:19:08,060 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 07:19:08,080 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 07:19:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:08,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-23 07:19:08,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:19:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-23 07:19:08,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:19:08,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522910590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:19:08,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:19:08,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 17 [2023-11-23 07:19:08,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175453131] [2023-11-23 07:19:08,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:19:08,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:19:08,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:19:08,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:19:08,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:19:08,677 INFO L87 Difference]: Start difference. First operand 178 states and 215 transitions. Second operand has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-23 07:19:09,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:19:09,270 INFO L93 Difference]: Finished difference Result 294 states and 356 transitions. [2023-11-23 07:19:09,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 07:19:09,270 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) Word has length 162 [2023-11-23 07:19:09,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:19:09,271 INFO L225 Difference]: With dead ends: 294 [2023-11-23 07:19:09,271 INFO L226 Difference]: Without dead ends: 180 [2023-11-23 07:19:09,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:19:09,272 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 3 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:19:09,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1605 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:19:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-23 07:19:09,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2023-11-23 07:19:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 108 states have (on average 1.1574074074074074) internal successors, (125), 110 states have internal predecessors, (125), 41 states have call successors, (41), 22 states have call predecessors, (41), 26 states have return successors, (45), 43 states have call predecessors, (45), 40 states have call successors, (45) [2023-11-23 07:19:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 211 transitions. [2023-11-23 07:19:09,286 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 211 transitions. Word has length 162 [2023-11-23 07:19:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:19:09,287 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 211 transitions. [2023-11-23 07:19:09,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-23 07:19:09,287 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 211 transitions. [2023-11-23 07:19:09,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-23 07:19:09,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:19:09,288 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:19:09,314 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 07:19:09,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:09,496 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:19:09,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:19:09,497 INFO L85 PathProgramCache]: Analyzing trace with hash 743980344, now seen corresponding path program 2 times [2023-11-23 07:19:09,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:19:09,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156601191] [2023-11-23 07:19:09,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:09,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:19:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:09,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:09,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:19:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:09,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:19:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:19:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:19:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:19:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:19:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:19:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:19:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:19:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:19:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:19:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 07:19:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:19:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 07:19:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 07:19:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 07:19:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:19:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 07:19:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:19:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:19:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 07:19:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 07:19:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-23 07:19:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-11-23 07:19:10,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:19:10,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156601191] [2023-11-23 07:19:10,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156601191] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:19:10,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265797856] [2023-11-23 07:19:10,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:19:10,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:10,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:19:10,354 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 07:19:10,384 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 07:19:10,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:19:10,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:19:10,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 121 conjunts are in the unsatisfiable core [2023-11-23 07:19:10,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:19:11,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:19:11,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:19:11,064 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 39 treesize of output 1 [2023-11-23 07:19:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 07:19:11,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:19:11,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265797856] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:19:11,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:19:11,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17] total 25 [2023-11-23 07:19:11,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418018733] [2023-11-23 07:19:11,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:19:11,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-23 07:19:11,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:19:11,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-23 07:19:11,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2023-11-23 07:19:11,960 INFO L87 Difference]: Start difference. First operand 176 states and 211 transitions. Second operand has 25 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 8 states have call successors, (55), 6 states have call predecessors, (55), 8 states have return successors, (48), 7 states have call predecessors, (48), 8 states have call successors, (48) [2023-11-23 07:19:14,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:19:14,447 INFO L93 Difference]: Finished difference Result 353 states and 424 transitions. [2023-11-23 07:19:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 07:19:14,447 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 8 states have call successors, (55), 6 states have call predecessors, (55), 8 states have return successors, (48), 7 states have call predecessors, (48), 8 states have call successors, (48) Word has length 164 [2023-11-23 07:19:14,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:19:14,448 INFO L225 Difference]: With dead ends: 353 [2023-11-23 07:19:14,448 INFO L226 Difference]: Without dead ends: 189 [2023-11-23 07:19:14,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=131, Invalid=1201, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 07:19:14,450 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 231 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:19:14,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 659 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 07:19:14,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-23 07:19:14,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2023-11-23 07:19:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 108 states have (on average 1.1481481481481481) internal successors, (124), 110 states have internal predecessors, (124), 41 states have call successors, (41), 22 states have call predecessors, (41), 26 states have return successors, (45), 43 states have call predecessors, (45), 40 states have call successors, (45) [2023-11-23 07:19:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 210 transitions. [2023-11-23 07:19:14,466 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 210 transitions. Word has length 164 [2023-11-23 07:19:14,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:19:14,466 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 210 transitions. [2023-11-23 07:19:14,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 8 states have call successors, (55), 6 states have call predecessors, (55), 8 states have return successors, (48), 7 states have call predecessors, (48), 8 states have call successors, (48) [2023-11-23 07:19:14,467 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 210 transitions. [2023-11-23 07:19:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 07:19:14,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:19:14,468 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:19:14,487 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 07:19:14,684 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,SelfDestructingSolverStorable11 [2023-11-23 07:19:14,685 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:19:14,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:19:14,685 INFO L85 PathProgramCache]: Analyzing trace with hash -357905123, now seen corresponding path program 1 times [2023-11-23 07:19:14,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:19:14,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311912779] [2023-11-23 07:19:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:14,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:19:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:19:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:19:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:19:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:19:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:19:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:19:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:19:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:19:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:19:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:19:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:19:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:19:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:19:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 07:19:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:19:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:19:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:19:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:19:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 07:19:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:19:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:19:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 07:19:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-23 07:19:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 07:19:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-23 07:19:15,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:19:15,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311912779] [2023-11-23 07:19:15,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311912779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:19:15,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264491602] [2023-11-23 07:19:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:15,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:15,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:19:15,691 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 07:19:15,732 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 07:19:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:16,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 2790 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:19:16,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:19:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-23 07:19:16,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:19:16,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264491602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:19:16,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:19:16,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 10 [2023-11-23 07:19:16,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729203206] [2023-11-23 07:19:16,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:19:16,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:19:16,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:19:16,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:19:16,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:19:16,402 INFO L87 Difference]: Start difference. First operand 176 states and 210 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-23 07:19:16,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:19:16,832 INFO L93 Difference]: Finished difference Result 304 states and 364 transitions. [2023-11-23 07:19:16,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:19:16,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 166 [2023-11-23 07:19:16,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:19:16,834 INFO L225 Difference]: With dead ends: 304 [2023-11-23 07:19:16,834 INFO L226 Difference]: Without dead ends: 176 [2023-11-23 07:19:16,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:19:16,835 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 2 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:19:16,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 720 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:19:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-23 07:19:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 172. [2023-11-23 07:19:16,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 105 states have (on average 1.1333333333333333) internal successors, (119), 107 states have internal predecessors, (119), 41 states have call successors, (41), 22 states have call predecessors, (41), 25 states have return successors, (44), 42 states have call predecessors, (44), 40 states have call successors, (44) [2023-11-23 07:19:16,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 204 transitions. [2023-11-23 07:19:16,848 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 204 transitions. Word has length 166 [2023-11-23 07:19:16,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:19:16,848 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 204 transitions. [2023-11-23 07:19:16,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-23 07:19:16,849 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 204 transitions. [2023-11-23 07:19:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-23 07:19:16,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:19:16,850 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:19:16,868 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 07:19:17,060 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,SelfDestructingSolverStorable12 [2023-11-23 07:19:17,060 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:19:17,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:19:17,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1090996080, now seen corresponding path program 1 times [2023-11-23 07:19:17,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:19:17,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949622489] [2023-11-23 07:19:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:17,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:19:17,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:19:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345788588] [2023-11-23 07:19:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:17,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:17,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:19:17,111 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 07:19:17,128 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 07:19:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:18,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 141 conjunts are in the unsatisfiable core [2023-11-23 07:19:18,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:19:18,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:19:18,678 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 27 treesize of output 1 [2023-11-23 07:19:18,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:19:19,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:19:19,472 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 45 treesize of output 17 [2023-11-23 07:19:19,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:19:19,645 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 45 treesize of output 17 [2023-11-23 07:19:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 155 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-23 07:19:20,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:19:21,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:19:21,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949622489] [2023-11-23 07:19:21,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:19:21,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345788588] [2023-11-23 07:19:21,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345788588] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:19:21,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:19:21,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2023-11-23 07:19:21,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549464199] [2023-11-23 07:19:21,404 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:19:21,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-23 07:19:21,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:19:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-23 07:19:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1743, Unknown=0, NotChecked=0, Total=1892 [2023-11-23 07:19:21,406 INFO L87 Difference]: Start difference. First operand 172 states and 204 transitions. Second operand has 37 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 33 states have internal predecessors, (95), 14 states have call successors, (32), 5 states have call predecessors, (32), 13 states have return successors, (28), 13 states have call predecessors, (28), 14 states have call successors, (28) [2023-11-23 07:19:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:19:28,354 INFO L93 Difference]: Finished difference Result 325 states and 373 transitions. [2023-11-23 07:19:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-23 07:19:28,355 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 33 states have internal predecessors, (95), 14 states have call successors, (32), 5 states have call predecessors, (32), 13 states have return successors, (28), 13 states have call predecessors, (28), 14 states have call successors, (28) Word has length 172 [2023-11-23 07:19:28,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:19:28,356 INFO L225 Difference]: With dead ends: 325 [2023-11-23 07:19:28,356 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 07:19:28,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 153 SyntacticMatches, 14 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1293 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=422, Invalid=4834, Unknown=0, NotChecked=0, Total=5256 [2023-11-23 07:19:28,362 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 158 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 2834 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:19:28,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 2496 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2834 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-23 07:19:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 07:19:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 203. [2023-11-23 07:19:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 128 states have (on average 1.1171875) internal successors, (143), 130 states have internal predecessors, (143), 43 states have call successors, (43), 28 states have call predecessors, (43), 31 states have return successors, (46), 44 states have call predecessors, (46), 42 states have call successors, (46) [2023-11-23 07:19:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 232 transitions. [2023-11-23 07:19:28,406 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 232 transitions. Word has length 172 [2023-11-23 07:19:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:19:28,407 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 232 transitions. [2023-11-23 07:19:28,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 33 states have internal predecessors, (95), 14 states have call successors, (32), 5 states have call predecessors, (32), 13 states have return successors, (28), 13 states have call predecessors, (28), 14 states have call successors, (28) [2023-11-23 07:19:28,408 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 232 transitions. [2023-11-23 07:19:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-23 07:19:28,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:19:28,409 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:19:28,426 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 07:19:28,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 07:19:28,617 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:19:28,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:19:28,617 INFO L85 PathProgramCache]: Analyzing trace with hash 74578617, now seen corresponding path program 1 times [2023-11-23 07:19:28,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:19:28,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873139486] [2023-11-23 07:19:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:19:28,670 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:19:28,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723875971] [2023-11-23 07:19:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:28,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:28,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:19:28,672 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 07:19:28,673 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 07:19:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:29,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 2964 conjuncts, 142 conjunts are in the unsatisfiable core [2023-11-23 07:19:29,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:19:29,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:19:29,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:19:29,380 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 27 treesize of output 1 [2023-11-23 07:19:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:19:29,742 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 47 treesize of output 19 [2023-11-23 07:19:29,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:19:29,852 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 47 treesize of output 19 [2023-11-23 07:19:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 145 proven. 10 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 07:19:30,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:19:30,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:19:30,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873139486] [2023-11-23 07:19:30,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:19:30,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723875971] [2023-11-23 07:19:30,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723875971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:19:30,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:19:30,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-11-23 07:19:30,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211850409] [2023-11-23 07:19:30,797 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:19:30,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 07:19:30,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:19:30,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 07:19:30,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2023-11-23 07:19:30,798 INFO L87 Difference]: Start difference. First operand 203 states and 232 transitions. Second operand has 23 states, 19 states have (on average 4.526315789473684) internal successors, (86), 21 states have internal predecessors, (86), 11 states have call successors, (31), 4 states have call predecessors, (31), 8 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2023-11-23 07:19:34,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:19:34,187 INFO L93 Difference]: Finished difference Result 451 states and 510 transitions. [2023-11-23 07:19:34,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-23 07:19:34,188 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 4.526315789473684) internal successors, (86), 21 states have internal predecessors, (86), 11 states have call successors, (31), 4 states have call predecessors, (31), 8 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) Word has length 173 [2023-11-23 07:19:34,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:19:34,189 INFO L225 Difference]: With dead ends: 451 [2023-11-23 07:19:34,189 INFO L226 Difference]: Without dead ends: 206 [2023-11-23 07:19:34,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 167 SyntacticMatches, 16 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=213, Invalid=1857, Unknown=0, NotChecked=0, Total=2070 [2023-11-23 07:19:34,191 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 38 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:19:34,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2112 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-23 07:19:34,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-23 07:19:34,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 203. [2023-11-23 07:19:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 128 states have (on average 1.109375) internal successors, (142), 130 states have internal predecessors, (142), 43 states have call successors, (43), 28 states have call predecessors, (43), 31 states have return successors, (46), 44 states have call predecessors, (46), 42 states have call successors, (46) [2023-11-23 07:19:34,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 231 transitions. [2023-11-23 07:19:34,215 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 231 transitions. Word has length 173 [2023-11-23 07:19:34,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:19:34,216 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 231 transitions. [2023-11-23 07:19:34,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 4.526315789473684) internal successors, (86), 21 states have internal predecessors, (86), 11 states have call successors, (31), 4 states have call predecessors, (31), 8 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2023-11-23 07:19:34,216 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 231 transitions. [2023-11-23 07:19:34,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-23 07:19:34,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:19:34,217 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:19:34,238 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 07:19:34,424 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,SelfDestructingSolverStorable14 [2023-11-23 07:19:34,424 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:19:34,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:19:34,425 INFO L85 PathProgramCache]: Analyzing trace with hash 285118658, now seen corresponding path program 2 times [2023-11-23 07:19:34,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:19:34,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551857828] [2023-11-23 07:19:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:34,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:19:34,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:19:34,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844641626] [2023-11-23 07:19:34,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:19:34,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:34,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:19:34,484 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 07:19:34,508 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 07:19:35,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:19:35,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:19:35,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 110 conjunts are in the unsatisfiable core [2023-11-23 07:19:35,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:19:35,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:19:35,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:19:35,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:19:35,600 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 53 treesize of output 25 [2023-11-23 07:19:35,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:19:35,696 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 53 treesize of output 25 [2023-11-23 07:19:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 151 proven. 11 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-23 07:19:36,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:19:36,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:19:36,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551857828] [2023-11-23 07:19:36,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:19:36,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844641626] [2023-11-23 07:19:36,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844641626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:19:36,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:19:36,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2023-11-23 07:19:36,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751942810] [2023-11-23 07:19:36,677 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:19:36,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 07:19:36,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:19:36,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 07:19:36,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2023-11-23 07:19:36,678 INFO L87 Difference]: Start difference. First operand 203 states and 231 transitions. Second operand has 26 states, 21 states have (on average 4.333333333333333) internal successors, (91), 25 states have internal predecessors, (91), 11 states have call successors, (32), 4 states have call predecessors, (32), 9 states have return successors, (28), 10 states have call predecessors, (28), 11 states have call successors, (28) [2023-11-23 07:19:40,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:19:40,427 INFO L93 Difference]: Finished difference Result 429 states and 487 transitions. [2023-11-23 07:19:40,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-23 07:19:40,428 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 4.333333333333333) internal successors, (91), 25 states have internal predecessors, (91), 11 states have call successors, (32), 4 states have call predecessors, (32), 9 states have return successors, (28), 10 states have call predecessors, (28), 11 states have call successors, (28) Word has length 174 [2023-11-23 07:19:40,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:19:40,429 INFO L225 Difference]: With dead ends: 429 [2023-11-23 07:19:40,429 INFO L226 Difference]: Without dead ends: 282 [2023-11-23 07:19:40,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 169 SyntacticMatches, 14 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=306, Invalid=3000, Unknown=0, NotChecked=0, Total=3306 [2023-11-23 07:19:40,431 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 79 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:19:40,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 2469 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-23 07:19:40,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-23 07:19:40,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 261. [2023-11-23 07:19:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 166 states have (on average 1.108433734939759) internal successors, (184), 170 states have internal predecessors, (184), 51 states have call successors, (51), 34 states have call predecessors, (51), 43 states have return successors, (61), 56 states have call predecessors, (61), 49 states have call successors, (61) [2023-11-23 07:19:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 296 transitions. [2023-11-23 07:19:40,455 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 296 transitions. Word has length 174 [2023-11-23 07:19:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:19:40,456 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 296 transitions. [2023-11-23 07:19:40,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 4.333333333333333) internal successors, (91), 25 states have internal predecessors, (91), 11 states have call successors, (32), 4 states have call predecessors, (32), 9 states have return successors, (28), 10 states have call predecessors, (28), 11 states have call successors, (28) [2023-11-23 07:19:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 296 transitions. [2023-11-23 07:19:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-23 07:19:40,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:19:40,457 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:19:40,479 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 07:19:40,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:40,672 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:19:40,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:19:40,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1556443283, now seen corresponding path program 1 times [2023-11-23 07:19:40,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:19:40,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053090629] [2023-11-23 07:19:40,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:40,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:19:40,714 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:19:40,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451522228] [2023-11-23 07:19:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:40,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:40,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:19:40,715 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 07:19:40,740 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 07:19:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:42,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 116 conjunts are in the unsatisfiable core [2023-11-23 07:19:42,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:19:42,254 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 27 treesize of output 1 [2023-11-23 07:19:42,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:19:42,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:19:42,521 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 31 treesize of output 1 [2023-11-23 07:19:42,582 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 31 treesize of output 1 [2023-11-23 07:19:42,844 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 7 treesize of output 3 [2023-11-23 07:19:42,859 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 7 treesize of output 3 [2023-11-23 07:19:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 89 proven. 47 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 07:19:42,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:19:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-23 07:19:43,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:19:43,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053090629] [2023-11-23 07:19:43,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:19:43,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451522228] [2023-11-23 07:19:43,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451522228] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:19:43,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:19:43,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [27] total 34 [2023-11-23 07:19:43,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665185313] [2023-11-23 07:19:43,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:19:43,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:19:43,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:19:43,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:19:43,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 07:19:43,343 INFO L87 Difference]: Start difference. First operand 261 states and 296 transitions. Second operand has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 07:19:43,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:19:43,783 INFO L93 Difference]: Finished difference Result 263 states and 297 transitions. [2023-11-23 07:19:43,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:19:43,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 175 [2023-11-23 07:19:43,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:19:43,785 INFO L225 Difference]: With dead ends: 263 [2023-11-23 07:19:43,785 INFO L226 Difference]: Without dead ends: 261 [2023-11-23 07:19:43,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 297 SyntacticMatches, 19 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=1303, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 07:19:43,786 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 22 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:19:43,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1224 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:19:43,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-23 07:19:43,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2023-11-23 07:19:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 166 states have (on average 1.1024096385542168) internal successors, (183), 170 states have internal predecessors, (183), 51 states have call successors, (51), 34 states have call predecessors, (51), 43 states have return successors, (61), 56 states have call predecessors, (61), 49 states have call successors, (61) [2023-11-23 07:19:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 295 transitions. [2023-11-23 07:19:43,812 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 295 transitions. Word has length 175 [2023-11-23 07:19:43,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:19:43,814 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 295 transitions. [2023-11-23 07:19:43,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 07:19:43,814 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 295 transitions. [2023-11-23 07:19:43,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-23 07:19:43,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:19:43,815 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:19:43,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 07:19:44,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 07:19:44,024 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:19:44,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:19:44,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1684849348, now seen corresponding path program 1 times [2023-11-23 07:19:44,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:19:44,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498013823] [2023-11-23 07:19:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:44,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:19:44,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:19:44,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501141403] [2023-11-23 07:19:44,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:44,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:44,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:19:44,073 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:19:44,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 07:19:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:19:44,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-23 07:19:44,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:19:44,725 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 07:19:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 110 proven. 20 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-23 07:19:45,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:19:47,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:19:47,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498013823] [2023-11-23 07:19:47,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:19:47,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501141403] [2023-11-23 07:19:47,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501141403] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:19:47,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:19:47,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-23 07:19:47,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574382701] [2023-11-23 07:19:47,362 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:19:47,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 07:19:47,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:19:47,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 07:19:47,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=355, Unknown=1, NotChecked=0, Total=420 [2023-11-23 07:19:47,363 INFO L87 Difference]: Start difference. First operand 261 states and 295 transitions. Second operand has 16 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 9 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2023-11-23 07:19:49,846 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 07:19:52,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:19:54,626 WARN L539 Checker$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 07:19:56,711 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 07:19:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:19:57,689 INFO L93 Difference]: Finished difference Result 345 states and 385 transitions. [2023-11-23 07:19:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 07:19:57,690 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 9 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) Word has length 194 [2023-11-23 07:19:57,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:19:57,691 INFO L225 Difference]: With dead ends: 345 [2023-11-23 07:19:57,691 INFO L226 Difference]: Without dead ends: 261 [2023-11-23 07:19:57,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 171 SyntacticMatches, 20 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=158, Invalid=771, Unknown=1, NotChecked=0, Total=930 [2023-11-23 07:19:57,692 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 150 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 84 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:19:57,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 568 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1455 Invalid, 4 Unknown, 0 Unchecked, 10.1s Time] [2023-11-23 07:19:57,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-23 07:19:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2023-11-23 07:19:57,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 166 states have (on average 1.0903614457831325) internal successors, (181), 170 states have internal predecessors, (181), 51 states have call successors, (51), 34 states have call predecessors, (51), 43 states have return successors, (61), 56 states have call predecessors, (61), 49 states have call successors, (61) [2023-11-23 07:19:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 293 transitions. [2023-11-23 07:19:57,717 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 293 transitions. Word has length 194 [2023-11-23 07:19:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:19:57,717 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 293 transitions. [2023-11-23 07:19:57,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 9 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2023-11-23 07:19:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 293 transitions. [2023-11-23 07:19:57,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-23 07:19:57,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:19:57,719 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:19:57,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 07:19:57,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 07:19:57,938 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:19:57,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:19:57,938 INFO L85 PathProgramCache]: Analyzing trace with hash 7908447, now seen corresponding path program 1 times [2023-11-23 07:19:57,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:19:57,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847300396] [2023-11-23 07:19:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:57,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:19:57,983 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:19:57,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092566112] [2023-11-23 07:19:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:57,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:57,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:19:57,988 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:19:58,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 07:20:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:20:00,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 251 conjunts are in the unsatisfiable core [2023-11-23 07:20:00,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:20:00,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:20:00,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:20:00,316 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 27 treesize of output 1 [2023-11-23 07:20:01,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:20:01,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:20:01,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:20:01,997 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-23 07:20:01,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 87 [2023-11-23 07:20:02,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:20:02,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:20:02,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:20:02,387 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-23 07:20:02,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 87 [2023-11-23 07:20:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 146 proven. 90 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 07:20:07,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:20:11,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:20:11,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847300396] [2023-11-23 07:20:11,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:20:11,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092566112] [2023-11-23 07:20:11,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092566112] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:20:11,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:20:11,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2023-11-23 07:20:11,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101449478] [2023-11-23 07:20:11,962 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:20:11,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-23 07:20:11,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:20:11,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-23 07:20:11,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=4418, Unknown=3, NotChecked=0, Total=4692 [2023-11-23 07:20:11,964 INFO L87 Difference]: Start difference. First operand 261 states and 293 transitions. Second operand has 51 states, 40 states have (on average 3.0) internal successors, (120), 44 states have internal predecessors, (120), 21 states have call successors, (36), 7 states have call predecessors, (36), 15 states have return successors, (34), 19 states have call predecessors, (34), 21 states have call successors, (34) [2023-11-23 07:20:26,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:20:26,212 INFO L93 Difference]: Finished difference Result 387 states and 430 transitions. [2023-11-23 07:20:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-23 07:20:26,216 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 40 states have (on average 3.0) internal successors, (120), 44 states have internal predecessors, (120), 21 states have call successors, (36), 7 states have call predecessors, (36), 15 states have return successors, (34), 19 states have call predecessors, (34), 21 states have call successors, (34) Word has length 209 [2023-11-23 07:20:26,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:20:26,217 INFO L225 Difference]: With dead ends: 387 [2023-11-23 07:20:26,217 INFO L226 Difference]: Without dead ends: 270 [2023-11-23 07:20:26,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 238 SyntacticMatches, 15 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4365 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=912, Invalid=14337, Unknown=3, NotChecked=0, Total=15252 [2023-11-23 07:20:26,221 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 237 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 4872 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 4969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 4872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:20:26,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1323 Invalid, 4969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 4872 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-11-23 07:20:26,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-23 07:20:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2023-11-23 07:20:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 170 states have (on average 1.088235294117647) internal successors, (185), 174 states have internal predecessors, (185), 51 states have call successors, (51), 35 states have call predecessors, (51), 44 states have return successors, (61), 56 states have call predecessors, (61), 49 states have call successors, (61) [2023-11-23 07:20:26,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 297 transitions. [2023-11-23 07:20:26,262 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 297 transitions. Word has length 209 [2023-11-23 07:20:26,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:20:26,262 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 297 transitions. [2023-11-23 07:20:26,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 40 states have (on average 3.0) internal successors, (120), 44 states have internal predecessors, (120), 21 states have call successors, (36), 7 states have call predecessors, (36), 15 states have return successors, (34), 19 states have call predecessors, (34), 21 states have call successors, (34) [2023-11-23 07:20:26,262 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 297 transitions. [2023-11-23 07:20:26,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-23 07:20:26,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:20:26,263 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:20:26,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-23 07:20:26,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:20:26,472 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:20:26,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:20:26,472 INFO L85 PathProgramCache]: Analyzing trace with hash -737004215, now seen corresponding path program 1 times [2023-11-23 07:20:26,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:20:26,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8440614] [2023-11-23 07:20:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:20:26,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:20:26,535 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:20:26,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378278450] [2023-11-23 07:20:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:20:26,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:20:26,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:20:26,537 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:20:26,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 07:20:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:20:27,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 3117 conjuncts, 149 conjunts are in the unsatisfiable core [2023-11-23 07:20:27,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:20:27,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:20:27,274 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 16 treesize of output 1 [2023-11-23 07:20:27,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:20:27,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:20:27,753 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 48 treesize of output 20 [2023-11-23 07:20:27,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:20:27,884 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 48 treesize of output 20 [2023-11-23 07:20:28,907 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 28 treesize of output 27 [2023-11-23 07:20:28,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:20:28,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 34 [2023-11-23 07:20:29,868 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 140 proven. 48 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-23 07:20:29,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:20:30,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:20:30,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8440614] [2023-11-23 07:20:30,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:20:30,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378278450] [2023-11-23 07:20:30,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378278450] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:20:30,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:20:30,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2023-11-23 07:20:30,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944254087] [2023-11-23 07:20:30,262 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:20:30,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-23 07:20:30,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:20:30,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-23 07:20:30,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1802, Unknown=0, NotChecked=0, Total=1980 [2023-11-23 07:20:30,264 INFO L87 Difference]: Start difference. First operand 266 states and 297 transitions. Second operand has 40 states, 32 states have (on average 3.46875) internal successors, (111), 34 states have internal predecessors, (111), 17 states have call successors, (36), 7 states have call predecessors, (36), 11 states have return successors, (34), 16 states have call predecessors, (34), 16 states have call successors, (34) [2023-11-23 07:20:39,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:20:39,737 INFO L93 Difference]: Finished difference Result 432 states and 473 transitions. [2023-11-23 07:20:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-23 07:20:39,737 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 32 states have (on average 3.46875) internal successors, (111), 34 states have internal predecessors, (111), 17 states have call successors, (36), 7 states have call predecessors, (36), 11 states have return successors, (34), 16 states have call predecessors, (34), 16 states have call successors, (34) Word has length 209 [2023-11-23 07:20:39,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:20:39,739 INFO L225 Difference]: With dead ends: 432 [2023-11-23 07:20:39,739 INFO L226 Difference]: Without dead ends: 355 [2023-11-23 07:20:39,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 166 SyntacticMatches, 17 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2386 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=722, Invalid=7834, Unknown=0, NotChecked=0, Total=8556 [2023-11-23 07:20:39,741 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 237 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 4844 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 4963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 4844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:20:39,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 953 Invalid, 4963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 4844 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-23 07:20:39,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-23 07:20:39,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 329. [2023-11-23 07:20:39,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 213 states have (on average 1.0845070422535212) internal successors, (231), 217 states have internal predecessors, (231), 62 states have call successors, (62), 44 states have call predecessors, (62), 53 states have return successors, (70), 67 states have call predecessors, (70), 59 states have call successors, (70) [2023-11-23 07:20:39,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 363 transitions. [2023-11-23 07:20:39,803 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 363 transitions. Word has length 209 [2023-11-23 07:20:39,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:20:39,803 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 363 transitions. [2023-11-23 07:20:39,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 32 states have (on average 3.46875) internal successors, (111), 34 states have internal predecessors, (111), 17 states have call successors, (36), 7 states have call predecessors, (36), 11 states have return successors, (34), 16 states have call predecessors, (34), 16 states have call successors, (34) [2023-11-23 07:20:39,804 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 363 transitions. [2023-11-23 07:20:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-23 07:20:39,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:20:39,805 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:20:39,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-23 07:20:40,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:20:40,023 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:20:40,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:20:40,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2018731634, now seen corresponding path program 1 times [2023-11-23 07:20:40,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:20:40,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893055955] [2023-11-23 07:20:40,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:20:40,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:20:40,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:20:40,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653483774] [2023-11-23 07:20:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:20:40,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:20:40,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:20:40,075 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:20:40,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-23 07:20:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:20:40,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 3113 conjuncts, 167 conjunts are in the unsatisfiable core [2023-11-23 07:20:40,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:20:40,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:20:40,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:20:42,497 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-23 07:20:42,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 56 [2023-11-23 07:20:42,647 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-23 07:20:42,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 63 [2023-11-23 07:20:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 158 proven. 49 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-23 07:20:44,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:20:48,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:20:48,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893055955] [2023-11-23 07:20:48,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:20:48,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653483774] [2023-11-23 07:20:48,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653483774] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:20:48,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:20:48,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2023-11-23 07:20:48,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896789764] [2023-11-23 07:20:48,819 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:20:48,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-23 07:20:48,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:20:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-23 07:20:48,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2976, Unknown=2, NotChecked=0, Total=3192 [2023-11-23 07:20:48,821 INFO L87 Difference]: Start difference. First operand 329 states and 363 transitions. Second operand has 48 states, 37 states have (on average 3.108108108108108) internal successors, (115), 38 states have internal predecessors, (115), 16 states have call successors, (36), 7 states have call predecessors, (36), 14 states have return successors, (34), 16 states have call predecessors, (34), 15 states have call successors, (34) [2023-11-23 07:21:01,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:21:01,830 INFO L93 Difference]: Finished difference Result 415 states and 449 transitions. [2023-11-23 07:21:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-23 07:21:01,830 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 37 states have (on average 3.108108108108108) internal successors, (115), 38 states have internal predecessors, (115), 16 states have call successors, (36), 7 states have call predecessors, (36), 14 states have return successors, (34), 16 states have call predecessors, (34), 15 states have call successors, (34) Word has length 207 [2023-11-23 07:21:01,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:21:01,832 INFO L225 Difference]: With dead ends: 415 [2023-11-23 07:21:01,833 INFO L226 Difference]: Without dead ends: 370 [2023-11-23 07:21:01,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 149 SyntacticMatches, 19 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3496 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=869, Invalid=12239, Unknown=2, NotChecked=0, Total=13110 [2023-11-23 07:21:01,836 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 319 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 5767 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 5917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 5767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:21:01,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1384 Invalid, 5917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 5767 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-11-23 07:21:01,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-23 07:21:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 347. [2023-11-23 07:21:01,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 225 states have (on average 1.08) internal successors, (243), 230 states have internal predecessors, (243), 62 states have call successors, (62), 47 states have call predecessors, (62), 59 states have return successors, (73), 69 states have call predecessors, (73), 59 states have call successors, (73) [2023-11-23 07:21:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 378 transitions. [2023-11-23 07:21:01,905 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 378 transitions. Word has length 207 [2023-11-23 07:21:01,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:21:01,906 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 378 transitions. [2023-11-23 07:21:01,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 37 states have (on average 3.108108108108108) internal successors, (115), 38 states have internal predecessors, (115), 16 states have call successors, (36), 7 states have call predecessors, (36), 14 states have return successors, (34), 16 states have call predecessors, (34), 15 states have call successors, (34) [2023-11-23 07:21:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 378 transitions. [2023-11-23 07:21:01,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-23 07:21:01,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:21:01,907 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:21:01,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-23 07:21:02,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:21:02,127 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:21:02,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:21:02,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1771081077, now seen corresponding path program 2 times [2023-11-23 07:21:02,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:21:02,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281083065] [2023-11-23 07:21:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:21:02,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:21:02,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:21:02,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214347034] [2023-11-23 07:21:02,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:21:02,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:21:02,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:21:02,181 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:21:02,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-23 07:21:02,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:21:02,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:21:02,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 3132 conjuncts, 151 conjunts are in the unsatisfiable core [2023-11-23 07:21:02,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:21:02,981 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 39 treesize of output 1 [2023-11-23 07:21:02,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:21:02,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:21:03,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:21:03,235 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 52 treesize of output 24 [2023-11-23 07:21:03,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:21:03,309 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 52 treesize of output 24 [2023-11-23 07:21:09,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:21:09,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:21:09,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2023-11-23 07:21:10,044 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:21:10,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 81 [2023-11-23 07:21:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 125 proven. 42 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-23 07:21:10,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:21:11,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:21:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281083065] [2023-11-23 07:21:11,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:21:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214347034] [2023-11-23 07:21:11,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214347034] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:21:11,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:21:11,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2023-11-23 07:21:11,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019258238] [2023-11-23 07:21:11,803 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:21:11,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-23 07:21:11,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:21:11,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-23 07:21:11,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1209, Unknown=3, NotChecked=0, Total=1332 [2023-11-23 07:21:11,805 INFO L87 Difference]: Start difference. First operand 347 states and 378 transitions. Second operand has 33 states, 28 states have (on average 3.5) internal successors, (98), 29 states have internal predecessors, (98), 16 states have call successors, (35), 6 states have call predecessors, (35), 8 states have return successors, (33), 14 states have call predecessors, (33), 15 states have call successors, (33) [2023-11-23 07:21:14,837 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 07:21:19,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:21:21,833 WARN L539 Checker$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 07:21:24,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:21:28,169 WARN L539 Checker$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 07:21:30,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:21:32,262 WARN L539 Checker$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 07:21:34,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:21:36,331 WARN L539 Checker$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 07:21:38,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:21:40,372 WARN L539 Checker$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 07:21:42,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:21:44,442 WARN L539 Checker$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 07:21:46,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:21:48,586 WARN L539 Checker$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 07:21:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:21:50,630 INFO L93 Difference]: Finished difference Result 549 states and 596 transitions. [2023-11-23 07:21:50,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-23 07:21:50,630 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 3.5) internal successors, (98), 29 states have internal predecessors, (98), 16 states have call successors, (35), 6 states have call predecessors, (35), 8 states have return successors, (33), 14 states have call predecessors, (33), 15 states have call successors, (33) Word has length 208 [2023-11-23 07:21:50,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:21:50,632 INFO L225 Difference]: With dead ends: 549 [2023-11-23 07:21:50,632 INFO L226 Difference]: Without dead ends: 477 [2023-11-23 07:21:50,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 168 SyntacticMatches, 19 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=393, Invalid=3764, Unknown=3, NotChecked=0, Total=4160 [2023-11-23 07:21:50,633 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 198 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 4175 mSolverCounterSat, 99 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 4289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 4175 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:21:50,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1048 Invalid, 4289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 4175 Invalid, 15 Unknown, 0 Unchecked, 37.6s Time] [2023-11-23 07:21:50,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-11-23 07:21:50,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 463. [2023-11-23 07:21:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 300 states have (on average 1.0833333333333333) internal successors, (325), 309 states have internal predecessors, (325), 79 states have call successors, (79), 59 states have call predecessors, (79), 83 states have return successors, (102), 94 states have call predecessors, (102), 74 states have call successors, (102) [2023-11-23 07:21:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 506 transitions. [2023-11-23 07:21:50,713 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 506 transitions. Word has length 208 [2023-11-23 07:21:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:21:50,713 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 506 transitions. [2023-11-23 07:21:50,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 3.5) internal successors, (98), 29 states have internal predecessors, (98), 16 states have call successors, (35), 6 states have call predecessors, (35), 8 states have return successors, (33), 14 states have call predecessors, (33), 15 states have call successors, (33) [2023-11-23 07:21:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 506 transitions. [2023-11-23 07:21:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-23 07:21:50,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:21:50,715 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:21:50,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-23 07:21:50,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-23 07:21:50,928 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:21:50,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:21:50,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1003809170, now seen corresponding path program 3 times [2023-11-23 07:21:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:21:50,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090224512] [2023-11-23 07:21:50,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:21:50,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:21:50,974 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:21:50,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310419545] [2023-11-23 07:21:50,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 07:21:50,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:21:50,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:21:50,975 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:21:50,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-23 07:21:51,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-23 07:21:51,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:21:51,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 2632 conjuncts, 189 conjunts are in the unsatisfiable core [2023-11-23 07:21:51,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:21:51,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:21:51,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:21:51,875 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 27 treesize of output 1 [2023-11-23 07:21:52,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:21:52,366 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 46 treesize of output 18 [2023-11-23 07:21:52,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:21:52,516 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 46 treesize of output 18 [2023-11-23 07:21:53,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 39 [2023-11-23 07:21:53,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:21:53,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 60 [2023-11-23 07:21:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 138 proven. 49 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-23 07:21:54,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:21:57,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:21:57,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090224512] [2023-11-23 07:21:57,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:21:57,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310419545] [2023-11-23 07:21:57,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310419545] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:21:57,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:21:57,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2023-11-23 07:21:57,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978239702] [2023-11-23 07:21:57,361 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:21:57,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-23 07:21:57,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:21:57,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-23 07:21:57,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2257, Unknown=1, NotChecked=0, Total=2450 [2023-11-23 07:21:57,363 INFO L87 Difference]: Start difference. First operand 463 states and 506 transitions. Second operand has 45 states, 34 states have (on average 3.264705882352941) internal successors, (111), 38 states have internal predecessors, (111), 18 states have call successors, (36), 7 states have call predecessors, (36), 11 states have return successors, (34), 16 states have call predecessors, (34), 17 states have call successors, (34) [2023-11-23 07:22:08,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:22:08,871 INFO L93 Difference]: Finished difference Result 677 states and 740 transitions. [2023-11-23 07:22:08,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-23 07:22:08,872 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 34 states have (on average 3.264705882352941) internal successors, (111), 38 states have internal predecessors, (111), 18 states have call successors, (36), 7 states have call predecessors, (36), 11 states have return successors, (34), 16 states have call predecessors, (34), 17 states have call successors, (34) Word has length 209 [2023-11-23 07:22:08,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:22:08,876 INFO L225 Difference]: With dead ends: 677 [2023-11-23 07:22:08,876 INFO L226 Difference]: Without dead ends: 597 [2023-11-23 07:22:08,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 161 SyntacticMatches, 17 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2424 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=649, Invalid=8280, Unknown=1, NotChecked=0, Total=8930 [2023-11-23 07:22:08,877 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 286 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 6741 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 6870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 6741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:22:08,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1254 Invalid, 6870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 6741 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-11-23 07:22:08,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-11-23 07:22:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 571. [2023-11-23 07:22:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 370 states have (on average 1.0810810810810811) internal successors, (400), 382 states have internal predecessors, (400), 96 states have call successors, (96), 71 states have call predecessors, (96), 104 states have return successors, (128), 117 states have call predecessors, (128), 89 states have call successors, (128) [2023-11-23 07:22:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 624 transitions. [2023-11-23 07:22:09,001 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 624 transitions. Word has length 209 [2023-11-23 07:22:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:22:09,002 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 624 transitions. [2023-11-23 07:22:09,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 34 states have (on average 3.264705882352941) internal successors, (111), 38 states have internal predecessors, (111), 18 states have call successors, (36), 7 states have call predecessors, (36), 11 states have return successors, (34), 16 states have call predecessors, (34), 17 states have call successors, (34) [2023-11-23 07:22:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 624 transitions. [2023-11-23 07:22:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-23 07:22:09,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:22:09,003 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:22:09,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-23 07:22:09,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-23 07:22:09,204 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:22:09,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:22:09,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1126060907, now seen corresponding path program 4 times [2023-11-23 07:22:09,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:22:09,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831244818] [2023-11-23 07:22:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:22:09,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:22:09,255 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:22:09,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809768256] [2023-11-23 07:22:09,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 07:22:09,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:22:09,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:22:09,256 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:22:09,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-23 07:22:09,967 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 07:22:09,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:22:09,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 183 conjunts are in the unsatisfiable core [2023-11-23 07:22:09,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:22:10,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:22:10,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:22:10,103 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 31 treesize of output 1 [2023-11-23 07:22:10,127 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 31 treesize of output 1 [2023-11-23 07:22:20,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:22:20,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:22:20,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:22:20,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:22:20,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 60 [2023-11-23 07:22:20,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:22:20,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 114 treesize of output 121 [2023-11-23 07:22:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 85 proven. 23 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-23 07:22:22,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:22:22,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:22:22,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831244818] [2023-11-23 07:22:22,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:22:22,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809768256] [2023-11-23 07:22:22,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809768256] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:22:22,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:22:22,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2023-11-23 07:22:22,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450801162] [2023-11-23 07:22:22,497 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:22:22,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-23 07:22:22,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:22:22,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-23 07:22:22,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1748, Unknown=5, NotChecked=0, Total=1892 [2023-11-23 07:22:22,499 INFO L87 Difference]: Start difference. First operand 571 states and 624 transitions. Second operand has 39 states, 32 states have (on average 3.09375) internal successors, (99), 34 states have internal predecessors, (99), 16 states have call successors, (34), 6 states have call predecessors, (34), 10 states have return successors, (34), 14 states have call predecessors, (34), 15 states have call successors, (34) [2023-11-23 07:22:26,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:22:28,854 WARN L539 Checker$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 07:22:31,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:22:33,303 WARN L539 Checker$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 07:22:35,377 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] Killed by 15