./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_u8_harness_negated.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_u8_harness_negated.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 b9b18ebf4b8789ea2f47784074870c5f6db1e5ba9b6bdc5a046638032691b06b --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:33:44,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:33:44,651 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:33:44,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:33:44,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:33:44,705 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:33:44,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:33:44,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:33:44,721 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:33:44,725 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:33:44,725 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:33:44,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:33:44,726 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:33:44,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:33:44,727 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:33:44,728 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:33:44,728 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:33:44,728 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:33:44,729 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:33:44,729 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:33:44,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:33:44,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:33:44,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:33:44,730 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:33:44,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:33:44,731 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:33:44,731 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:33:44,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:33:44,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:33:44,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:33:44,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:33:44,733 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:33:44,733 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:33:44,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:33:44,733 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:33:44,733 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:33:44,734 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:33:44,734 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:33:44,734 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:33:44,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9b18ebf4b8789ea2f47784074870c5f6db1e5ba9b6bdc5a046638032691b06b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:33:45,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:33:45,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:33:45,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:33:45,115 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:33:45,115 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:33:45,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_u8_harness_negated.i [2023-11-23 08:33:46,724 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:33:47,339 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:33:47,340 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_u8_harness_negated.i [2023-11-23 08:33:47,377 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3a0cecb9/20eda29f50c140b0ae2e6c0b8c3b474a/FLAGd72242a81 [2023-11-23 08:33:47,391 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3a0cecb9/20eda29f50c140b0ae2e6c0b8c3b474a [2023-11-23 08:33:47,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:33:47,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:33:47,400 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:33:47,400 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:33:47,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:33:47,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:47" (1/1) ... [2023-11-23 08:33:47,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b587e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:47, skipping insertion in model container [2023-11-23 08:33:47,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:47" (1/1) ... [2023-11-23 08:33:47,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:33:47,841 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_u8_harness_negated.i[4497,4510] [2023-11-23 08:33:47,850 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_u8_harness_negated.i[4557,4570] [2023-11-23 08:33:48,624 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:48,629 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:48,629 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:48,630 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:48,631 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:48,647 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:48,649 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:48,651 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:48,651 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:48,903 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:33:48,904 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:33:48,905 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:33:48,906 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:33:48,908 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:33:48,908 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:33:48,909 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:33:48,909 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:33:48,910 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:33:48,910 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:33:49,163 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:49,176 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:49,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:33:49,300 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:33:49,320 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_u8_harness_negated.i[4497,4510] [2023-11-23 08:33:49,321 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_u8_harness_negated.i[4557,4570] [2023-11-23 08:33:49,371 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:49,371 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:49,372 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:49,372 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:49,373 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:49,389 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:49,390 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:49,391 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:49,392 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:49,420 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:33:49,421 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:33:49,422 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:33:49,422 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:33:49,423 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:33:49,423 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:33:49,424 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:33:49,424 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:33:49,425 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:33:49,425 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:33:49,521 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2023-11-23 08:33:49,523 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:49,523 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:33:49,535 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8723-8734] [2023-11-23 08:33:49,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:33:49,774 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,775 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,775 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,775 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,776 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,776 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,776 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,776 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,777 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,777 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,777 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,777 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,777 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,778 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,778 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,778 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,778 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,778 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:33:49,786 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:33:49,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:49 WrapperNode [2023-11-23 08:33:49,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:33:49,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:33:49,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:33:49,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:33:49,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:49" (1/1) ... [2023-11-23 08:33:49,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:49" (1/1) ... [2023-11-23 08:33:50,000 INFO L138 Inliner]: procedures = 689, calls = 2634, calls flagged for inlining = 61, calls inlined = 10, statements flattened = 995 [2023-11-23 08:33:50,001 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:33:50,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:33:50,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:33:50,002 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:33:50,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:49" (1/1) ... [2023-11-23 08:33:50,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:49" (1/1) ... [2023-11-23 08:33:50,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:49" (1/1) ... [2023-11-23 08:33:50,027 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:49" (1/1) ... [2023-11-23 08:33:50,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:49" (1/1) ... [2023-11-23 08:33:50,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:49" (1/1) ... [2023-11-23 08:33:50,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:49" (1/1) ... [2023-11-23 08:33:50,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:49" (1/1) ... [2023-11-23 08:33:50,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:33:50,138 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:33:50,138 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:33:50,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:33:50,139 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:49" (1/1) ... [2023-11-23 08:33:50,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:33:50,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:33:50,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:33:50,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:33:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2023-11-23 08:33:50,249 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2023-11-23 08:33:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 08:33:50,250 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 08:33:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:33:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:33:50,250 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:33:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 08:33:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 08:33:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 08:33:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:33:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 08:33:50,252 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 08:33:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:33:50,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:33:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:33:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:33:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:33:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:33:50,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:33:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:33:50,253 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:33:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 08:33:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 08:33:50,254 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:33:50,254 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:33:50,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:33:50,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:33:50,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:33:50,255 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 08:33:50,255 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 08:33:50,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:33:50,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-23 08:33:50,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:33:50,509 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:33:50,512 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:33:51,567 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:33:51,682 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:33:51,683 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 08:33:51,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:51 BoogieIcfgContainer [2023-11-23 08:33:51,684 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:33:51,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:33:51,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:33:51,689 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:33:51,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:33:47" (1/3) ... [2023-11-23 08:33:51,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638d6d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:51, skipping insertion in model container [2023-11-23 08:33:51,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:49" (2/3) ... [2023-11-23 08:33:51,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638d6d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:51, skipping insertion in model container [2023-11-23 08:33:51,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:51" (3/3) ... [2023-11-23 08:33:51,693 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_u8_harness_negated.i [2023-11-23 08:33:51,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:33:51,709 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:33:51,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:33:51,771 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;@61301cff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:33:51,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:33:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 83 states have (on average 1.3734939759036144) internal successors, (114), 84 states have internal predecessors, (114), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-23 08:33:51,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 08:33:51,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:33:51,789 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:33:51,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:33:51,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:33:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash -584737473, now seen corresponding path program 1 times [2023-11-23 08:33:51,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:33:51,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711602432] [2023-11-23 08:33:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:33:51,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:33:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:33:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:33:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:33:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:33:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:33:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:33:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:33:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:33:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:33:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:33:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:33:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:33:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:33:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:33:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-23 08:33:52,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:33:52,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711602432] [2023-11-23 08:33:52,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711602432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:33:52,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:33:52,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 08:33:52,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806187093] [2023-11-23 08:33:52,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:33:52,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 08:33:52,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:33:52,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 08:33:52,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:33:52,925 INFO L87 Difference]: Start difference. First operand has 131 states, 83 states have (on average 1.3734939759036144) internal successors, (114), 84 states have internal predecessors, (114), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:33:53,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:33:53,413 INFO L93 Difference]: Finished difference Result 260 states and 402 transitions. [2023-11-23 08:33:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 08:33:53,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 98 [2023-11-23 08:33:53,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:33:53,424 INFO L225 Difference]: With dead ends: 260 [2023-11-23 08:33:53,425 INFO L226 Difference]: Without dead ends: 128 [2023-11-23 08:33:53,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:33:53,433 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 34 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:33:53,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 212 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:33:53,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-23 08:33:53,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-11-23 08:33:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 81 states have (on average 1.345679012345679) internal successors, (109), 82 states have internal predecessors, (109), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 08:33:53,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 184 transitions. [2023-11-23 08:33:53,484 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 184 transitions. Word has length 98 [2023-11-23 08:33:53,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:33:53,484 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 184 transitions. [2023-11-23 08:33:53,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:33:53,485 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 184 transitions. [2023-11-23 08:33:53,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 08:33:53,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:33:53,489 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:33:53,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:33:53,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:33:53,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:33:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash -260013819, now seen corresponding path program 1 times [2023-11-23 08:33:53,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:33:53,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401438444] [2023-11-23 08:33:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:33:53,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:33:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:33:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:33:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:33:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:33:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:33:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:33:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:33:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:33:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:33:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:33:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:33:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:33:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:33:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:33:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-11-23 08:33:54,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:33:54,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401438444] [2023-11-23 08:33:54,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401438444] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:33:54,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541089374] [2023-11-23 08:33:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:33:54,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:33:54,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:33:54,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:33:54,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:33:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:55,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 2641 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:33:55,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:33:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 08:33:55,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:33:55,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541089374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:33:55,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:33:55,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-23 08:33:55,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536072209] [2023-11-23 08:33:55,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:33:55,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:33:55,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:33:55,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:33:55,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:33:55,170 INFO L87 Difference]: Start difference. First operand 128 states and 184 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 08:33:55,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:33:55,435 INFO L93 Difference]: Finished difference Result 243 states and 360 transitions. [2023-11-23 08:33:55,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:33:55,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 98 [2023-11-23 08:33:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:33:55,443 INFO L225 Difference]: With dead ends: 243 [2023-11-23 08:33:55,443 INFO L226 Difference]: Without dead ends: 130 [2023-11-23 08:33:55,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:33:55,448 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 37 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:33:55,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 556 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:33:55,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-23 08:33:55,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-11-23 08:33:55,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 84 states have internal predecessors, (110), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (45), 37 states have call predecessors, (45), 37 states have call successors, (45) [2023-11-23 08:33:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 193 transitions. [2023-11-23 08:33:55,484 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 193 transitions. Word has length 98 [2023-11-23 08:33:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:33:55,487 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 193 transitions. [2023-11-23 08:33:55,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 08:33:55,488 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 193 transitions. [2023-11-23 08:33:55,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 08:33:55,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:33:55,491 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:33:55,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 08:33:55,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:33:55,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:33:55,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:33:55,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1530989482, now seen corresponding path program 1 times [2023-11-23 08:33:55,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:33:55,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560665041] [2023-11-23 08:33:55,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:33:55,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:33:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:33:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:33:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:33:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:33:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:33:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:33:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:33:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:33:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:33:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:33:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:33:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:33:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:33:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:33:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-11-23 08:33:56,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:33:56,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560665041] [2023-11-23 08:33:56,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560665041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:33:56,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687988305] [2023-11-23 08:33:56,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:33:56,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:33:56,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:33:56,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:33:56,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:33:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:57,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 2646 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:33:57,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:33:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 08:33:57,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:33:57,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687988305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:33:57,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:33:57,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-11-23 08:33:57,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543033827] [2023-11-23 08:33:57,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:33:57,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:33:57,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:33:57,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:33:57,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:33:57,329 INFO L87 Difference]: Start difference. First operand 130 states and 193 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:33:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:33:57,713 INFO L93 Difference]: Finished difference Result 233 states and 347 transitions. [2023-11-23 08:33:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:33:57,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 100 [2023-11-23 08:33:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:33:57,716 INFO L225 Difference]: With dead ends: 233 [2023-11-23 08:33:57,716 INFO L226 Difference]: Without dead ends: 130 [2023-11-23 08:33:57,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:33:57,717 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 35 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:33:57,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 714 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:33:57,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-23 08:33:57,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-11-23 08:33:57,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 84 states have internal predecessors, (110), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2023-11-23 08:33:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 191 transitions. [2023-11-23 08:33:57,728 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 191 transitions. Word has length 100 [2023-11-23 08:33:57,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:33:57,729 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 191 transitions. [2023-11-23 08:33:57,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:33:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 191 transitions. [2023-11-23 08:33:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 08:33:57,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:33:57,731 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:33:57,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:33:57,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 08:33:57,942 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:33:57,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:33:57,942 INFO L85 PathProgramCache]: Analyzing trace with hash -66798961, now seen corresponding path program 2 times [2023-11-23 08:33:57,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:33:57,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248249889] [2023-11-23 08:33:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:33:57,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:33:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:33:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:33:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:33:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:33:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:33:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:33:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:33:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:33:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:33:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:33:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:33:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:33:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:33:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:33:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-11-23 08:33:58,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:33:58,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248249889] [2023-11-23 08:33:58,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248249889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:33:58,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678839801] [2023-11-23 08:33:58,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:33:58,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:33:58,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:33:58,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:33:59,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:33:59,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:33:59,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:33:59,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 2318 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 08:33:59,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:33:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-11-23 08:33:59,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:33:59,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678839801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:33:59,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:33:59,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-23 08:33:59,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776103039] [2023-11-23 08:33:59,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:33:59,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:33:59,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:33:59,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:33:59,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:33:59,522 INFO L87 Difference]: Start difference. First operand 130 states and 191 transitions. Second operand has 7 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 08:33:59,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:33:59,878 INFO L93 Difference]: Finished difference Result 138 states and 199 transitions. [2023-11-23 08:33:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:33:59,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 102 [2023-11-23 08:33:59,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:33:59,880 INFO L225 Difference]: With dead ends: 138 [2023-11-23 08:33:59,881 INFO L226 Difference]: Without dead ends: 136 [2023-11-23 08:33:59,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:33:59,884 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 5 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:33:59,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1004 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:33:59,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-23 08:33:59,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2023-11-23 08:33:59,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 87 states have internal predecessors, (113), 39 states have call successors, (39), 9 states have call predecessors, (39), 10 states have return successors, (44), 38 states have call predecessors, (44), 38 states have call successors, (44) [2023-11-23 08:33:59,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 196 transitions. [2023-11-23 08:33:59,897 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 196 transitions. Word has length 102 [2023-11-23 08:33:59,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:33:59,898 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 196 transitions. [2023-11-23 08:33:59,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 08:33:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 196 transitions. [2023-11-23 08:33:59,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 08:33:59,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:33:59,900 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:33:59,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:34:00,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:34:00,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:34:00,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:34:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1701694518, now seen corresponding path program 3 times [2023-11-23 08:34:00,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:34:00,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945332151] [2023-11-23 08:34:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:34:00,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:34:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:00,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:34:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:00,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:34:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:00,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:34:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:00,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:34:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:00,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:34:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:00,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:34:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:00,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:34:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:00,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:34:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:01,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:34:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:01,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:34:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:01,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:34:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:01,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:34:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:01,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:34:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:01,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:34:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:34:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:01,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:34:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-11-23 08:34:01,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:34:01,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945332151] [2023-11-23 08:34:01,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945332151] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:34:01,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129234186] [2023-11-23 08:34:01,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:34:01,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:34:01,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:34:01,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:34:01,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:34:01,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 08:34:01,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:34:01,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 08:34:01,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:34:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-11-23 08:34:01,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:34:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-11-23 08:34:02,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129234186] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:34:02,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:34:02,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 7] total 16 [2023-11-23 08:34:02,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378234573] [2023-11-23 08:34:02,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:34:02,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 08:34:02,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:34:02,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 08:34:02,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:34:02,164 INFO L87 Difference]: Start difference. First operand 135 states and 196 transitions. Second operand has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 7 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) [2023-11-23 08:34:03,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:34:03,795 INFO L93 Difference]: Finished difference Result 269 states and 399 transitions. [2023-11-23 08:34:03,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:34:03,796 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 7 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) Word has length 104 [2023-11-23 08:34:03,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:34:03,797 INFO L225 Difference]: With dead ends: 269 [2023-11-23 08:34:03,798 INFO L226 Difference]: Without dead ends: 166 [2023-11-23 08:34:03,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2023-11-23 08:34:03,799 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 314 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:34:03,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1060 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 08:34:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-23 08:34:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2023-11-23 08:34:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 110 states have internal predecessors, (152), 41 states have call successors, (41), 11 states have call predecessors, (41), 10 states have return successors, (43), 40 states have call predecessors, (43), 40 states have call successors, (43) [2023-11-23 08:34:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 236 transitions. [2023-11-23 08:34:03,810 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 236 transitions. Word has length 104 [2023-11-23 08:34:03,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:34:03,810 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 236 transitions. [2023-11-23 08:34:03,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 7 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) [2023-11-23 08:34:03,811 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 236 transitions. [2023-11-23 08:34:03,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 08:34:03,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:34:03,812 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:34:03,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:34:04,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:34:04,030 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:34:04,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:34:04,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2114480682, now seen corresponding path program 1 times [2023-11-23 08:34:04,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:34:04,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775337225] [2023-11-23 08:34:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:34:04,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:34:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:34:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:34:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:34:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:34:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:34:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:34:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:34:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:34:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:34:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:34:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:34:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:34:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:34:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:34:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:34:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:34:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-23 08:34:05,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:34:05,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775337225] [2023-11-23 08:34:05,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775337225] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:34:05,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501626097] [2023-11-23 08:34:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:34:05,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:34:05,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:34:05,926 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:34:05,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:34:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:06,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 2666 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-23 08:34:06,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:34:06,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:34:06,768 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 08:34:06,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-23 08:34:06,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 08:34:07,493 INFO L349 Elim1Store]: treesize reduction 96, result has 20.0 percent of original size [2023-11-23 08:34:07,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 31 treesize of output 37 [2023-11-23 08:34:08,361 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2023-11-23 08:34:08,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 24 treesize of output 28 [2023-11-23 08:34:08,695 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-23 08:34:08,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-11-23 08:34:08,740 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 18 treesize of output 13 [2023-11-23 08:34:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 80 proven. 45 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 08:34:11,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:34:11,213 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_394 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_394) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset|) 18446744073709551616) 0))) is different from false [2023-11-23 08:34:11,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501626097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:34:11,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:34:11,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 23] total 31 [2023-11-23 08:34:11,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414666237] [2023-11-23 08:34:11,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:34:11,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 08:34:11,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:34:11,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 08:34:11,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1005, Unknown=5, NotChecked=64, Total=1190 [2023-11-23 08:34:11,302 INFO L87 Difference]: Start difference. First operand 162 states and 236 transitions. Second operand has 31 states, 27 states have (on average 3.0) internal successors, (81), 27 states have internal predecessors, (81), 13 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (32), 10 states have call predecessors, (32), 13 states have call successors, (32) [2023-11-23 08:34:17,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:20,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:23,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:25,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:27,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:29,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:34,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:36,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:39,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:41,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:43,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:46,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:48,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:50,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:52,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:54,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:56,789 WARN L539 Checker$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 08:34:58,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:00,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:02,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:05,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:05,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:05,962 INFO L93 Difference]: Finished difference Result 519 states and 754 transitions. [2023-11-23 08:35:05,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-23 08:35:05,962 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 3.0) internal successors, (81), 27 states have internal predecessors, (81), 13 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (32), 10 states have call predecessors, (32), 13 states have call successors, (32) Word has length 108 [2023-11-23 08:35:05,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:05,965 INFO L225 Difference]: With dead ends: 519 [2023-11-23 08:35:05,965 INFO L226 Difference]: Without dead ends: 372 [2023-11-23 08:35:05,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 114 SyntacticMatches, 25 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=577, Invalid=4822, Unknown=7, NotChecked=144, Total=5550 [2023-11-23 08:35:05,968 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 528 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 3231 mSolverCounterSat, 189 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 3445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 3231 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:05,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1649 Invalid, 3445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 3231 Invalid, 25 Unknown, 0 Unchecked, 51.0s Time] [2023-11-23 08:35:05,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-11-23 08:35:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 315. [2023-11-23 08:35:05,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 212 states have (on average 1.330188679245283) internal successors, (282), 215 states have internal predecessors, (282), 75 states have call successors, (75), 26 states have call predecessors, (75), 27 states have return successors, (90), 73 states have call predecessors, (90), 73 states have call successors, (90) [2023-11-23 08:35:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 447 transitions. [2023-11-23 08:35:05,994 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 447 transitions. Word has length 108 [2023-11-23 08:35:05,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:05,995 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 447 transitions. [2023-11-23 08:35:05,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 3.0) internal successors, (81), 27 states have internal predecessors, (81), 13 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (32), 10 states have call predecessors, (32), 13 states have call successors, (32) [2023-11-23 08:35:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 447 transitions. [2023-11-23 08:35:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 08:35:05,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:05,997 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:35:06,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 08:35:06,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:06,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:06,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:06,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1689018056, now seen corresponding path program 1 times [2023-11-23 08:35:06,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:06,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169566865] [2023-11-23 08:35:06,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:06,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:35:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:35:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:35:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:35:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:35:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:35:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:35:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:35:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:35:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:35:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:35:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:35:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:35:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:35:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:35:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 08:35:07,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:07,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169566865] [2023-11-23 08:35:07,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169566865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:35:07,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:35:07,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:35:07,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735740102] [2023-11-23 08:35:07,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:35:07,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:35:07,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:07,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:35:07,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:35:07,711 INFO L87 Difference]: Start difference. First operand 315 states and 447 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2023-11-23 08:35:08,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:08,998 INFO L93 Difference]: Finished difference Result 492 states and 705 transitions. [2023-11-23 08:35:08,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:35:08,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 118 [2023-11-23 08:35:09,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:09,002 INFO L225 Difference]: With dead ends: 492 [2023-11-23 08:35:09,002 INFO L226 Difference]: Without dead ends: 330 [2023-11-23 08:35:09,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:35:09,004 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 80 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:09,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 653 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 08:35:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-11-23 08:35:09,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 325. [2023-11-23 08:35:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 217 states have (on average 1.3225806451612903) internal successors, (287), 220 states have internal predecessors, (287), 80 states have call successors, (80), 26 states have call predecessors, (80), 27 states have return successors, (95), 78 states have call predecessors, (95), 78 states have call successors, (95) [2023-11-23 08:35:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 462 transitions. [2023-11-23 08:35:09,039 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 462 transitions. Word has length 118 [2023-11-23 08:35:09,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:09,040 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 462 transitions. [2023-11-23 08:35:09,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2023-11-23 08:35:09,040 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 462 transitions. [2023-11-23 08:35:09,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 08:35:09,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:09,043 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:35:09,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 08:35:09,044 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:09,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:09,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1719223130, now seen corresponding path program 1 times [2023-11-23 08:35:09,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:09,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067220936] [2023-11-23 08:35:09,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:09,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:09,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:09,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:09,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:35:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:09,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:35:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:09,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:09,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:35:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:09,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:35:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:35:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:35:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:35:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:35:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:35:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:35:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:35:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:35:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:35:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 08:35:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:35:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:35:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-23 08:35:10,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:10,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067220936] [2023-11-23 08:35:10,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067220936] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:35:10,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760073213] [2023-11-23 08:35:10,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:10,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:10,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:35:10,090 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:35:10,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 08:35:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 08:35:10,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:35:10,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:35:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-11-23 08:35:10,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:35:10,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760073213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:35:10,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:35:10,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 20 [2023-11-23 08:35:10,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447653432] [2023-11-23 08:35:10,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:35:10,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:35:10,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:10,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:35:10,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:35:10,914 INFO L87 Difference]: Start difference. First operand 325 states and 462 transitions. Second operand has 12 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-23 08:35:13,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:16,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:18,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:20,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:22,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:24,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:26,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:28,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:30,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:32,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:34,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:36,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:38,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:38,916 INFO L93 Difference]: Finished difference Result 733 states and 1037 transitions. [2023-11-23 08:35:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:35:38,916 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 128 [2023-11-23 08:35:38,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:38,923 INFO L225 Difference]: With dead ends: 733 [2023-11-23 08:35:38,923 INFO L226 Difference]: Without dead ends: 423 [2023-11-23 08:35:38,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2023-11-23 08:35:38,926 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 99 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 15 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:38,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1344 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 477 Invalid, 13 Unknown, 0 Unchecked, 27.8s Time] [2023-11-23 08:35:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-11-23 08:35:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 377. [2023-11-23 08:35:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 255 states have (on average 1.3019607843137255) internal successors, (332), 259 states have internal predecessors, (332), 89 states have call successors, (89), 32 states have call predecessors, (89), 32 states have return successors, (106), 85 states have call predecessors, (106), 87 states have call successors, (106) [2023-11-23 08:35:38,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 527 transitions. [2023-11-23 08:35:38,970 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 527 transitions. Word has length 128 [2023-11-23 08:35:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:38,971 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 527 transitions. [2023-11-23 08:35:38,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-23 08:35:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 527 transitions. [2023-11-23 08:35:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 08:35:38,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:38,980 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:35:38,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:35:39,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:39,184 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:39,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:39,185 INFO L85 PathProgramCache]: Analyzing trace with hash 669340900, now seen corresponding path program 1 times [2023-11-23 08:35:39,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:39,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399122624] [2023-11-23 08:35:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:39,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:39,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:39,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:35:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:39,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:35:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:39,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:39,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:35:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:35:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:35:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:35:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:35:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:35:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:35:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:35:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:35:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:35:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:35:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 08:35:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:35:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:35:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-23 08:35:40,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:40,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399122624] [2023-11-23 08:35:40,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399122624] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:35:40,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010184280] [2023-11-23 08:35:40,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:40,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:40,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:35:40,137 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:35:40,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 08:35:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:40,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:35:40,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:35:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-23 08:35:40,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:35:40,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010184280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:35:40,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:35:40,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 13 [2023-11-23 08:35:40,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246242150] [2023-11-23 08:35:40,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:35:40,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:35:40,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:40,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:35:40,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:35:40,721 INFO L87 Difference]: Start difference. First operand 377 states and 527 transitions. Second operand has 9 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 08:35:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:41,122 INFO L93 Difference]: Finished difference Result 747 states and 1058 transitions. [2023-11-23 08:35:41,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:35:41,122 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 128 [2023-11-23 08:35:41,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:41,125 INFO L225 Difference]: With dead ends: 747 [2023-11-23 08:35:41,125 INFO L226 Difference]: Without dead ends: 397 [2023-11-23 08:35:41,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:35:41,128 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 13 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:41,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1265 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:35:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-23 08:35:41,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 376. [2023-11-23 08:35:41,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 254 states have (on average 1.2992125984251968) internal successors, (330), 258 states have internal predecessors, (330), 89 states have call successors, (89), 32 states have call predecessors, (89), 32 states have return successors, (106), 85 states have call predecessors, (106), 87 states have call successors, (106) [2023-11-23 08:35:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 525 transitions. [2023-11-23 08:35:41,160 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 525 transitions. Word has length 128 [2023-11-23 08:35:41,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:41,161 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 525 transitions. [2023-11-23 08:35:41,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 08:35:41,161 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 525 transitions. [2023-11-23 08:35:41,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-23 08:35:41,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:41,163 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:35:41,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 08:35:41,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:41,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:41,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:41,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2018828651, now seen corresponding path program 1 times [2023-11-23 08:35:41,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:41,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552548230] [2023-11-23 08:35:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:41,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:35:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:35:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:35:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:35:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:35:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:35:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:35:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:35:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:35:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:35:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:35:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:35:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:35:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 08:35:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:35:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:35:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-11-23 08:35:42,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:42,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552548230] [2023-11-23 08:35:42,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552548230] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:35:42,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289221970] [2023-11-23 08:35:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:42,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:42,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:35:42,288 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:35:42,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 08:35:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:42,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-23 08:35:42,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:35:42,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:35:42,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 08:35:42,862 WARN L876 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (<= (+ |bounded_malloc_#res.base| 1) |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| (select |c_#valid| |bounded_malloc_#res.base|))))) is different from true [2023-11-23 08:35:42,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:35:42,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 08:35:42,964 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 08:35:42,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-23 08:35:43,196 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 08:35:43,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-23 08:35:43,218 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 18 treesize of output 13 [2023-11-23 08:35:45,361 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 18 treesize of output 13 [2023-11-23 08:35:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 185 proven. 44 refuted. 0 times theorem prover too weak. 54 trivial. 1 not checked. [2023-11-23 08:35:51,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:35:52,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289221970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:35:52,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:35:52,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 18] total 22 [2023-11-23 08:35:52,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779178998] [2023-11-23 08:35:52,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:35:52,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 08:35:52,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:52,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 08:35:52,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=719, Unknown=12, NotChecked=54, Total=870 [2023-11-23 08:35:52,256 INFO L87 Difference]: Start difference. First operand 376 states and 525 transitions. Second operand has 22 states, 18 states have (on average 5.111111111111111) internal successors, (92), 20 states have internal predecessors, (92), 8 states have call successors, (39), 7 states have call predecessors, (39), 7 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) [2023-11-23 08:35:56,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:58,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:01,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:05,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:08,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:10,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:12,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:14,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:16,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:18,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:20,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:23,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:25,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:27,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:29,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:31,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:36:32,395 INFO L93 Difference]: Finished difference Result 836 states and 1182 transitions. [2023-11-23 08:36:32,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-23 08:36:32,396 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 5.111111111111111) internal successors, (92), 20 states have internal predecessors, (92), 8 states have call successors, (39), 7 states have call predecessors, (39), 7 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) Word has length 130 [2023-11-23 08:36:32,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:36:32,398 INFO L225 Difference]: With dead ends: 836 [2023-11-23 08:36:32,399 INFO L226 Difference]: Without dead ends: 484 [2023-11-23 08:36:32,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 198 SyntacticMatches, 17 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=367, Invalid=2486, Unknown=13, NotChecked=104, Total=2970 [2023-11-23 08:36:32,434 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 297 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 142 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:36:32,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1602 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2132 Invalid, 16 Unknown, 285 Unchecked, 37.2s Time] [2023-11-23 08:36:32,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-11-23 08:36:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 435. [2023-11-23 08:36:32,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 304 states have (on average 1.269736842105263) internal successors, (386), 309 states have internal predecessors, (386), 89 states have call successors, (89), 40 states have call predecessors, (89), 41 states have return successors, (101), 85 states have call predecessors, (101), 87 states have call successors, (101) [2023-11-23 08:36:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 576 transitions. [2023-11-23 08:36:32,474 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 576 transitions. Word has length 130 [2023-11-23 08:36:32,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:36:32,475 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 576 transitions. [2023-11-23 08:36:32,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 5.111111111111111) internal successors, (92), 20 states have internal predecessors, (92), 8 states have call successors, (39), 7 states have call predecessors, (39), 7 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) [2023-11-23 08:36:32,475 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 576 transitions. [2023-11-23 08:36:32,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 08:36:32,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:36:32,479 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:36:32,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 08:36:32,695 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 08:36:32,695 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:36:32,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:36:32,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1249217733, now seen corresponding path program 1 times [2023-11-23 08:36:32,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:36:32,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881032642] [2023-11-23 08:36:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:36:32,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:36:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:33,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:33,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:33,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:36:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:33,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:36:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:33,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:33,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:36:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:33,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:36:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:33,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:36:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:36:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:33,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:36:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:33,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:36:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:34,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:36:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:34,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:36:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:36:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:36:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:34,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:36:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:34,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:36:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:34,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:36:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:34,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:36:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:34,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:36:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 33 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-11-23 08:36:34,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:36:34,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881032642] [2023-11-23 08:36:34,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881032642] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:36:34,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861277722] [2023-11-23 08:36:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:36:34,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:36:34,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:36:34,191 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:36:34,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 08:36:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:34,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:36:34,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:36:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-11-23 08:36:34,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:36:34,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861277722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:36:34,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:36:34,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2023-11-23 08:36:34,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973027882] [2023-11-23 08:36:34,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:36:34,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:36:34,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:36:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:36:34,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:36:34,902 INFO L87 Difference]: Start difference. First operand 435 states and 576 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 6 states have call successors, (19) [2023-11-23 08:36:35,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:36:35,248 INFO L93 Difference]: Finished difference Result 662 states and 861 transitions. [2023-11-23 08:36:35,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:36:35,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 6 states have call successors, (19) Word has length 139 [2023-11-23 08:36:35,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:36:35,251 INFO L225 Difference]: With dead ends: 662 [2023-11-23 08:36:35,251 INFO L226 Difference]: Without dead ends: 388 [2023-11-23 08:36:35,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2023-11-23 08:36:35,253 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 160 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:36:35,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 880 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:36:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-11-23 08:36:35,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 382. [2023-11-23 08:36:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 263 states have (on average 1.2433460076045628) internal successors, (327), 269 states have internal predecessors, (327), 82 states have call successors, (82), 34 states have call predecessors, (82), 36 states have return successors, (88), 78 states have call predecessors, (88), 80 states have call successors, (88) [2023-11-23 08:36:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 497 transitions. [2023-11-23 08:36:35,285 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 497 transitions. Word has length 139 [2023-11-23 08:36:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:36:35,285 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 497 transitions. [2023-11-23 08:36:35,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 6 states have call successors, (19) [2023-11-23 08:36:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 497 transitions. [2023-11-23 08:36:35,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-23 08:36:35,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:36:35,288 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:36:35,315 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 08:36:35,508 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 08:36:35,508 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:36:35,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:36:35,509 INFO L85 PathProgramCache]: Analyzing trace with hash -578636969, now seen corresponding path program 1 times [2023-11-23 08:36:35,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:36:35,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138281662] [2023-11-23 08:36:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:36:35,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:36:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:36:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:36:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:36:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:36:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:36:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:36:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:36:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:36:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:36:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:36:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:36:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:36:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:36:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:36:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 08:36:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-23 08:36:37,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:36:37,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138281662] [2023-11-23 08:36:37,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138281662] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:36:37,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350854406] [2023-11-23 08:36:37,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:36:37,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:36:37,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:36:37,507 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:36:37,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 08:36:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:38,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 2772 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-23 08:36:38,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:36:38,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 08:36:38,483 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 08:36:38,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-11-23 08:36:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 189 proven. 10 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 08:36:38,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:36:39,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2023-11-23 08:36:39,417 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 08:36:39,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2023-11-23 08:36:39,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2023-11-23 08:36:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 1 proven. 63 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 08:36:39,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350854406] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:36:39,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:36:39,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 17] total 38 [2023-11-23 08:36:39,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801487461] [2023-11-23 08:36:39,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:36:39,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-23 08:36:39,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:36:39,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-23 08:36:39,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1283, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 08:36:39,536 INFO L87 Difference]: Start difference. First operand 382 states and 497 transitions. Second operand has 38 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 8 states have call successors, (40), 5 states have call predecessors, (40), 10 states have return successors, (38), 8 states have call predecessors, (38), 8 states have call successors, (38) [2023-11-23 08:36:43,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:47,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:49,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:52,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:54,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:56,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:58,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:00,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:02,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:05,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:07,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:10,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:12,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:14,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:16,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:37:16,633 INFO L93 Difference]: Finished difference Result 729 states and 959 transitions. [2023-11-23 08:37:16,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-23 08:37:16,634 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 8 states have call successors, (40), 5 states have call predecessors, (40), 10 states have return successors, (38), 8 states have call predecessors, (38), 8 states have call successors, (38) Word has length 140 [2023-11-23 08:37:16,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:37:16,636 INFO L225 Difference]: With dead ends: 729 [2023-11-23 08:37:16,636 INFO L226 Difference]: Without dead ends: 354 [2023-11-23 08:37:16,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 294 SyntacticMatches, 8 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1865 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=971, Invalid=6001, Unknown=0, NotChecked=0, Total=6972 [2023-11-23 08:37:16,639 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 356 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 4389 mSolverCounterSat, 126 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 4529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 4389 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:37:16,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 2487 Invalid, 4529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 4389 Invalid, 14 Unknown, 0 Unchecked, 35.3s Time] [2023-11-23 08:37:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-23 08:37:16,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 189. [2023-11-23 08:37:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 132 states have (on average 1.2424242424242424) internal successors, (164), 135 states have internal predecessors, (164), 38 states have call successors, (38), 16 states have call predecessors, (38), 18 states have return successors, (39), 37 states have call predecessors, (39), 37 states have call successors, (39) [2023-11-23 08:37:16,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 241 transitions. [2023-11-23 08:37:16,658 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 241 transitions. Word has length 140 [2023-11-23 08:37:16,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:37:16,659 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 241 transitions. [2023-11-23 08:37:16,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 8 states have call successors, (40), 5 states have call predecessors, (40), 10 states have return successors, (38), 8 states have call predecessors, (38), 8 states have call successors, (38) [2023-11-23 08:37:16,659 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 241 transitions. [2023-11-23 08:37:16,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-23 08:37:16,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:37:16,661 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:37:16,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 08:37:16,876 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 08:37:16,876 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:37:16,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:37:16,877 INFO L85 PathProgramCache]: Analyzing trace with hash 962829677, now seen corresponding path program 1 times [2023-11-23 08:37:16,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:37:16,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637590525] [2023-11-23 08:37:16,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:37:16,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:37:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:37:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:37:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:37:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:37:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:37:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:37:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:37:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:37:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:37:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:37:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:37:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:37:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:37:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:37:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:37:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:37:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 25 proven. 19 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-23 08:37:17,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:37:17,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637590525] [2023-11-23 08:37:17,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637590525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:37:17,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65596774] [2023-11-23 08:37:17,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:37:17,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:37:17,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:37:17,896 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:37:17,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 08:37:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:18,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 2793 conjuncts, 92 conjunts are in the unsatisfiable core [2023-11-23 08:37:18,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:37:18,668 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 08:37:19,215 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:37:19,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16 [2023-11-23 08:37:19,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:37:19,308 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:37:19,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 08:37:19,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:37:19,767 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 08:37:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 146 proven. 94 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-23 08:37:20,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:37:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-23 08:37:21,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65596774] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:37:21,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:37:21,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 26, 13] total 45 [2023-11-23 08:37:21,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398645162] [2023-11-23 08:37:21,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:37:21,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-23 08:37:21,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:37:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-23 08:37:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1820, Unknown=0, NotChecked=0, Total=1980 [2023-11-23 08:37:21,090 INFO L87 Difference]: Start difference. First operand 189 states and 241 transitions. Second operand has 45 states, 39 states have (on average 3.1025641025641026) internal successors, (121), 41 states have internal predecessors, (121), 13 states have call successors, (46), 6 states have call predecessors, (46), 11 states have return successors, (41), 11 states have call predecessors, (41), 13 states have call successors, (41) [2023-11-23 08:37:26,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:28,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:30,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:34,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:36,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:38,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:40,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:43,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:45,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:47,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:49,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:51,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:53,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:55,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:57,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:38:00,493 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