./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_length_harness.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_length_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:39:21,899 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:39:21,962 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:39:21,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:39:21,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:39:21,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:39:21,991 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:39:21,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:39:21,992 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:39:21,995 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:39:21,996 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:39:21,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:39:21,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:39:21,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:39:21,998 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:39:21,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:39:21,998 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:39:21,999 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:39:21,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:39:21,999 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:39:21,999 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:39:22,000 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:39:22,000 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:39:22,000 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:39:22,001 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:39:22,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:39:22,001 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:39:22,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:39:22,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:39:22,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:39:22,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:39:22,003 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:39:22,003 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:39:22,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:39:22,003 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:39:22,004 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:39:22,004 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:39:22,004 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:39:22,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:39:22,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:39:22,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:39:22,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:39:22,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:39:22,254 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:39:22,254 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:39:22,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_array_list_length_harness.i [2023-11-23 06:39:23,391 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:39:23,740 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:39:23,740 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_length_harness.i [2023-11-23 06:39:23,768 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f09c8a8c/3d853fdf679a4efcbb5af0dac4d5634e/FLAGd39248994 [2023-11-23 06:39:23,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f09c8a8c/3d853fdf679a4efcbb5af0dac4d5634e [2023-11-23 06:39:23,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:39:23,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:39:23,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:39:23,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:39:23,799 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:39:23,799 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:39:23" (1/1) ... [2023-11-23 06:39:23,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb9323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:23, skipping insertion in model container [2023-11-23 06:39:23,800 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:39:23" (1/1) ... [2023-11-23 06:39:23,939 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:39:24,115 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2023-11-23 06:39:24,122 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2023-11-23 06:39:24,645 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,650 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,650 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,650 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,652 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,658 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,662 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,663 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,664 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,667 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,669 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,670 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,671 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,869 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:39:24,870 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:39:24,870 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:39:24,871 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:39:24,872 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:39:24,872 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:39:24,872 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:39:24,873 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:39:24,873 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:39:24,873 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:39:24,970 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:24,974 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:39:25,046 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:39:25,061 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2023-11-23 06:39:25,062 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2023-11-23 06:39:25,108 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,109 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,109 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,109 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,110 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,128 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,128 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,129 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,129 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,164 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:39:25,165 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:39:25,165 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:39:25,166 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:39:25,166 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:39:25,168 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:39:25,168 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:39:25,169 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:39:25,170 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:39:25,170 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:39:25,205 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,215 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:25,220 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7747-7758] [2023-11-23 06:39:25,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:39:25,351 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,351 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,351 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,351 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,352 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,352 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,352 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,353 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,353 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,353 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,353 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,353 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,354 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,354 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,354 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:25,360 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:39:25,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25 WrapperNode [2023-11-23 06:39:25,360 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:39:25,361 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:39:25,361 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:39:25,361 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:39:25,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25" (1/1) ... [2023-11-23 06:39:25,434 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25" (1/1) ... [2023-11-23 06:39:25,498 INFO L138 Inliner]: procedures = 689, calls = 1683, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 593 [2023-11-23 06:39:25,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:39:25,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:39:25,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:39:25,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:39:25,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25" (1/1) ... [2023-11-23 06:39:25,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25" (1/1) ... [2023-11-23 06:39:25,526 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25" (1/1) ... [2023-11-23 06:39:25,593 INFO L188 MemorySlicer]: Split 304 memory accesses to 7 slices as follows [2, 6, 236, 47, 3, 7, 3]. 78 percent of accesses are in the largest equivalence class. The 257 initializations are split as follows [2, 0, 236, 10, 1, 5, 3]. The 6 writes are split as follows [0, 2, 0, 3, 1, 0, 0]. [2023-11-23 06:39:25,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25" (1/1) ... [2023-11-23 06:39:25,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25" (1/1) ... [2023-11-23 06:39:25,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25" (1/1) ... [2023-11-23 06:39:25,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25" (1/1) ... [2023-11-23 06:39:25,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25" (1/1) ... [2023-11-23 06:39:25,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25" (1/1) ... [2023-11-23 06:39:25,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:39:25,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:39:25,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:39:25,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:39:25,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25" (1/1) ... [2023-11-23 06:39:25,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:39:25,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:39:25,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 06:39:25,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 06:39:25,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:39:25,778 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 06:39:25,778 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 06:39:25,778 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 06:39:25,778 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 06:39:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:39:25,779 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:39:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:39:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:39:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:39:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:39:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:39:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:39:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 06:39:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 06:39:25,780 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 06:39:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:39:25,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:39:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:39:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:39:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:39:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:39:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:39:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:39:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:39:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:39:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 06:39:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:39:25,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:39:25,783 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:39:25,783 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:39:25,783 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 06:39:25,783 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 06:39:25,783 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 06:39:25,784 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 06:39:25,784 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 06:39:25,784 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 06:39:25,784 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:39:25,784 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:39:25,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:39:25,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:39:25,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:39:25,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:39:25,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:39:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:39:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:39:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 06:39:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:39:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:39:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:39:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:39:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:39:25,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:39:25,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 06:39:25,786 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:39:25,786 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:39:25,786 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 06:39:25,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 06:39:25,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:39:25,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:39:25,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:39:25,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:39:25,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:39:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:39:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 06:39:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 06:39:25,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 06:39:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:39:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:39:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:39:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:39:25,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:39:25,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:39:25,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 06:39:26,034 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:39:26,050 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:39:26,521 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:39:26,591 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:39:26,591 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 06:39:26,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:39:26 BoogieIcfgContainer [2023-11-23 06:39:26,592 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:39:26,594 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:39:26,596 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:39:26,598 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:39:26,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:39:23" (1/3) ... [2023-11-23 06:39:26,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7adff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:39:26, skipping insertion in model container [2023-11-23 06:39:26,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:25" (2/3) ... [2023-11-23 06:39:26,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7adff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:39:26, skipping insertion in model container [2023-11-23 06:39:26,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:39:26" (3/3) ... [2023-11-23 06:39:26,602 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_length_harness.i [2023-11-23 06:39:26,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:39:26,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:39:26,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:39:26,666 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;@525433, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:39:26,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:39:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 64 states have (on average 1.25) internal successors, (80), 65 states have internal predecessors, (80), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 06:39:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 06:39:26,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:39:26,677 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:39:26,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:39:26,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:39:26,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1885822886, now seen corresponding path program 1 times [2023-11-23 06:39:26,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:39:26,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183010132] [2023-11-23 06:39:26,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:26,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:39:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:27,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:39:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:27,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:39:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:27,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:39:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:27,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 06:39:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:27,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 06:39:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:27,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:39:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:27,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:39:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:39:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:27,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:39:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:27,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 06:39:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:27,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:39:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 06:39:27,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:39:27,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183010132] [2023-11-23 06:39:27,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183010132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:39:27,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:39:27,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 06:39:27,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128943356] [2023-11-23 06:39:27,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:39:27,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:39:27,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:39:27,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:39:27,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 06:39:27,529 INFO L87 Difference]: Start difference. First operand has 109 states, 64 states have (on average 1.25) internal successors, (80), 65 states have internal predecessors, (80), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 06:39:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:39:28,227 INFO L93 Difference]: Finished difference Result 221 states and 310 transitions. [2023-11-23 06:39:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 06:39:28,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 68 [2023-11-23 06:39:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:39:28,236 INFO L225 Difference]: With dead ends: 221 [2023-11-23 06:39:28,236 INFO L226 Difference]: Without dead ends: 111 [2023-11-23 06:39:28,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 06:39:28,241 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 35 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:39:28,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 130 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:39:28,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-23 06:39:28,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 103. [2023-11-23 06:39:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 61 states have internal predecessors, (71), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-23 06:39:28,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2023-11-23 06:39:28,277 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 68 [2023-11-23 06:39:28,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:39:28,278 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2023-11-23 06:39:28,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 06:39:28,278 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2023-11-23 06:39:28,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 06:39:28,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:39:28,280 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:39:28,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:39:28,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:39:28,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:39:28,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1233035624, now seen corresponding path program 1 times [2023-11-23 06:39:28,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:39:28,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725277188] [2023-11-23 06:39:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:28,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:39:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:28,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:39:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:39:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:28,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:39:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 06:39:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:28,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 06:39:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:28,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:39:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:28,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:39:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:28,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:39:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:28,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:39:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:28,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 06:39:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:39:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:28,930 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 06:39:28,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:39:28,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725277188] [2023-11-23 06:39:28,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725277188] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:39:28,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184152186] [2023-11-23 06:39:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:28,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:28,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:39:28,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:39:28,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 06:39:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:29,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 2292 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 06:39:29,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:39:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 06:39:29,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:39:29,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184152186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:39:29,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:39:29,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 06:39:29,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587269016] [2023-11-23 06:39:29,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:39:29,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:39:29,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:39:29,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:39:29,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:39:29,437 INFO L87 Difference]: Start difference. First operand 103 states and 129 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 06:39:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:39:29,639 INFO L93 Difference]: Finished difference Result 176 states and 223 transitions. [2023-11-23 06:39:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:39:29,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 68 [2023-11-23 06:39:29,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:39:29,641 INFO L225 Difference]: With dead ends: 176 [2023-11-23 06:39:29,641 INFO L226 Difference]: Without dead ends: 105 [2023-11-23 06:39:29,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:39:29,642 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 28 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:39:29,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 382 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:39:29,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-23 06:39:29,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-11-23 06:39:29,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 61 states have (on average 1.180327868852459) internal successors, (72), 63 states have internal predecessors, (72), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 28 states have call predecessors, (30), 28 states have call successors, (30) [2023-11-23 06:39:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 132 transitions. [2023-11-23 06:39:29,659 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 132 transitions. Word has length 68 [2023-11-23 06:39:29,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:39:29,660 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 132 transitions. [2023-11-23 06:39:29,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 06:39:29,660 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 132 transitions. [2023-11-23 06:39:29,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 06:39:29,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:39:29,667 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1] [2023-11-23 06:39:29,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 06:39:29,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:29,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:39:29,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:39:29,881 INFO L85 PathProgramCache]: Analyzing trace with hash 759306355, now seen corresponding path program 1 times [2023-11-23 06:39:29,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:39:29,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72855937] [2023-11-23 06:39:29,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:29,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:39:29,930 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:39:29,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810359526] [2023-11-23 06:39:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:29,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:29,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:39:29,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:39:29,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 06:39:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:30,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 06:39:30,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:39:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 06:39:30,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:39:30,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:39:30,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72855937] [2023-11-23 06:39:30,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:39:30,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810359526] [2023-11-23 06:39:30,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810359526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:39:30,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:39:30,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:39:30,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059239949] [2023-11-23 06:39:30,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:39:30,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:39:30,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:39:30,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:39:30,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:39:30,501 INFO L87 Difference]: Start difference. First operand 105 states and 132 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 06:39:30,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:39:30,808 INFO L93 Difference]: Finished difference Result 166 states and 205 transitions. [2023-11-23 06:39:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:39:30,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 81 [2023-11-23 06:39:30,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:39:30,816 INFO L225 Difference]: With dead ends: 166 [2023-11-23 06:39:30,816 INFO L226 Difference]: Without dead ends: 103 [2023-11-23 06:39:30,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:39:30,817 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 34 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:39:30,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 560 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:39:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-23 06:39:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-23 06:39:30,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 61 states have internal predecessors, (70), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-23 06:39:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2023-11-23 06:39:30,841 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 128 transitions. Word has length 81 [2023-11-23 06:39:30,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:39:30,841 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 128 transitions. [2023-11-23 06:39:30,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 06:39:30,842 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 128 transitions. [2023-11-23 06:39:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 06:39:30,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:39:30,843 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:39:30,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 06:39:31,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 06:39:31,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:39:31,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:39:31,044 INFO L85 PathProgramCache]: Analyzing trace with hash -607058043, now seen corresponding path program 1 times [2023-11-23 06:39:31,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:39:31,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134829687] [2023-11-23 06:39:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:31,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:39:31,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:39:31,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208551835] [2023-11-23 06:39:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:31,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:31,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:39:31,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:39:31,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 06:41:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:41:48,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 2853 conjuncts, 256 conjunts are in the unsatisfiable core [2023-11-23 06:41:48,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:41:48,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 06:41:49,039 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 06:41:49,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:41:49,150 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 67 treesize of output 55 [2023-11-23 06:41:52,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:41:52,966 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 67 treesize of output 55 [2023-11-23 06:41:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 55 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:41:59,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:42:09,267 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 34 treesize of output 30 [2023-11-23 06:42:09,297 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 34 treesize of output 30 [2023-11-23 06:42:10,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:42:10,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134829687] [2023-11-23 06:42:10,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:42:10,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208551835] [2023-11-23 06:42:10,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208551835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:42:10,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:42:10,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2023-11-23 06:42:10,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037101907] [2023-11-23 06:42:10,170 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 06:42:10,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-23 06:42:10,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:42:10,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-23 06:42:10,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2561, Unknown=6, NotChecked=0, Total=2756 [2023-11-23 06:42:10,172 INFO L87 Difference]: Start difference. First operand 103 states and 128 transitions. Second operand has 40 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 31 states have internal predecessors, (60), 11 states have call successors, (15), 6 states have call predecessors, (15), 11 states have return successors, (15), 12 states have call predecessors, (15), 9 states have call successors, (15) [2023-11-23 06:42:12,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:42:15,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:42:17,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:42:19,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:42:21,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:42:24,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:42:26,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:42:28,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:42:30,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:42:35,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:42:37,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:42:39,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:42:41,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:42:47,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:42:49,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:43:02,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:43:14,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:43:14,817 INFO L93 Difference]: Finished difference Result 261 states and 324 transitions. [2023-11-23 06:43:14,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-23 06:43:14,818 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 31 states have internal predecessors, (60), 11 states have call successors, (15), 6 states have call predecessors, (15), 11 states have return successors, (15), 12 states have call predecessors, (15), 9 states have call successors, (15) Word has length 107 [2023-11-23 06:43:14,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:43:14,820 INFO L225 Difference]: With dead ends: 261 [2023-11-23 06:43:14,820 INFO L226 Difference]: Without dead ends: 259 [2023-11-23 06:43:14,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3061 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=826, Invalid=10482, Unknown=34, NotChecked=0, Total=11342 [2023-11-23 06:43:14,824 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 277 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 3413 mSolverCounterSat, 169 mSolverCounterUnsat, 44 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 3626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 3413 IncrementalHoareTripleChecker+Invalid, 44 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:43:14,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1419 Invalid, 3626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 3413 Invalid, 44 Unknown, 0 Unchecked, 37.8s Time] [2023-11-23 06:43:14,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-23 06:43:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 222. [2023-11-23 06:43:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 140 states have (on average 1.1857142857142857) internal successors, (166), 144 states have internal predecessors, (166), 50 states have call successors, (50), 26 states have call predecessors, (50), 31 states have return successors, (59), 51 states have call predecessors, (59), 46 states have call successors, (59) [2023-11-23 06:43:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 275 transitions. [2023-11-23 06:43:14,847 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 275 transitions. Word has length 107 [2023-11-23 06:43:14,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:43:14,847 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 275 transitions. [2023-11-23 06:43:14,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 31 states have internal predecessors, (60), 11 states have call successors, (15), 6 states have call predecessors, (15), 11 states have return successors, (15), 12 states have call predecessors, (15), 9 states have call successors, (15) [2023-11-23 06:43:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 275 transitions. [2023-11-23 06:43:14,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 06:43:14,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:43:14,857 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 06:43:14,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 06:43:15,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:15,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:43:15,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:43:15,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1443925955, now seen corresponding path program 1 times [2023-11-23 06:43:15,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:43:15,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672345135] [2023-11-23 06:43:15,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:15,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:43:15,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:43:15,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538624749] [2023-11-23 06:43:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:15,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:15,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:43:15,144 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:43:15,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 06:43:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:15,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:43:15,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:43:15,655 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-23 06:43:15,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:43:15,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:43:15,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672345135] [2023-11-23 06:43:15,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:43:15,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538624749] [2023-11-23 06:43:15,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538624749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:43:15,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:43:15,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 06:43:15,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006620070] [2023-11-23 06:43:15,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:43:15,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:43:15,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:43:15,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:43:15,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 06:43:15,658 INFO L87 Difference]: Start difference. First operand 222 states and 275 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:43:15,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:43:15,926 INFO L93 Difference]: Finished difference Result 400 states and 504 transitions. [2023-11-23 06:43:15,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:43:15,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 107 [2023-11-23 06:43:15,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:43:15,930 INFO L225 Difference]: With dead ends: 400 [2023-11-23 06:43:15,930 INFO L226 Difference]: Without dead ends: 237 [2023-11-23 06:43:15,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:43:15,931 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 7 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:43:15,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 346 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:43:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-23 06:43:15,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 228. [2023-11-23 06:43:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 146 states have (on average 1.178082191780822) internal successors, (172), 150 states have internal predecessors, (172), 50 states have call successors, (50), 26 states have call predecessors, (50), 31 states have return successors, (59), 51 states have call predecessors, (59), 46 states have call successors, (59) [2023-11-23 06:43:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 281 transitions. [2023-11-23 06:43:15,952 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 281 transitions. Word has length 107 [2023-11-23 06:43:15,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:43:15,952 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 281 transitions. [2023-11-23 06:43:15,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:43:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 281 transitions. [2023-11-23 06:43:15,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 06:43:15,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:43:15,953 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:43:15,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 06:43:16,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:16,170 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:43:16,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:43:16,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1938774883, now seen corresponding path program 1 times [2023-11-23 06:43:16,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:43:16,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89041017] [2023-11-23 06:43:16,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:16,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:43:16,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:43:16,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238700949] [2023-11-23 06:43:16,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:16,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:16,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:43:16,217 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:43:16,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 06:43:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:16,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 2853 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:43:16,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:43:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 06:43:16,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:43:16,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:43:16,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89041017] [2023-11-23 06:43:16,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:43:16,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238700949] [2023-11-23 06:43:16,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238700949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:43:16,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:43:16,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:43:16,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912507206] [2023-11-23 06:43:16,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:43:16,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:43:16,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:43:16,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:43:16,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:43:16,785 INFO L87 Difference]: Start difference. First operand 228 states and 281 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:43:17,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:43:17,123 INFO L93 Difference]: Finished difference Result 411 states and 515 transitions. [2023-11-23 06:43:17,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:43:17,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 109 [2023-11-23 06:43:17,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:43:17,125 INFO L225 Difference]: With dead ends: 411 [2023-11-23 06:43:17,126 INFO L226 Difference]: Without dead ends: 243 [2023-11-23 06:43:17,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:43:17,136 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 10 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:43:17,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 432 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:43:17,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-23 06:43:17,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 231. [2023-11-23 06:43:17,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 149 states have (on average 1.174496644295302) internal successors, (175), 153 states have internal predecessors, (175), 50 states have call successors, (50), 26 states have call predecessors, (50), 31 states have return successors, (59), 51 states have call predecessors, (59), 46 states have call successors, (59) [2023-11-23 06:43:17,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 284 transitions. [2023-11-23 06:43:17,159 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 284 transitions. Word has length 109 [2023-11-23 06:43:17,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:43:17,160 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 284 transitions. [2023-11-23 06:43:17,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:43:17,160 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 284 transitions. [2023-11-23 06:43:17,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 06:43:17,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:43:17,162 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:43:17,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-23 06:43:17,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:17,366 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:43:17,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:43:17,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2011161441, now seen corresponding path program 1 times [2023-11-23 06:43:17,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:43:17,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4254161] [2023-11-23 06:43:17,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:17,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:43:17,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:43:17,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582942451] [2023-11-23 06:43:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:17,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:17,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:43:17,458 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:43:17,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 06:43:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:19,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 76 conjunts are in the unsatisfiable core [2023-11-23 06:43:19,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:43:19,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-23 06:43:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 62 proven. 6 refuted. 8 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 06:43:34,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:43:34,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:43:34,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4254161] [2023-11-23 06:43:34,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:43:34,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582942451] [2023-11-23 06:43:34,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582942451] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:43:34,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:43:34,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-23 06:43:34,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651502374] [2023-11-23 06:43:34,285 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 06:43:34,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 06:43:34,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:43:34,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 06:43:34,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=389, Unknown=4, NotChecked=0, Total=462 [2023-11-23 06:43:34,287 INFO L87 Difference]: Start difference. First operand 231 states and 284 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 7 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-23 06:43:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:43:40,766 INFO L93 Difference]: Finished difference Result 697 states and 879 transitions. [2023-11-23 06:43:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-23 06:43:40,766 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 7 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 109 [2023-11-23 06:43:40,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:43:40,769 INFO L225 Difference]: With dead ends: 697 [2023-11-23 06:43:40,769 INFO L226 Difference]: Without dead ends: 524 [2023-11-23 06:43:40,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 126 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=322, Invalid=1652, Unknown=6, NotChecked=0, Total=1980 [2023-11-23 06:43:40,771 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 269 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 238 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:43:40,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 393 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1389 Invalid, 21 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 06:43:40,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-11-23 06:43:40,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 514. [2023-11-23 06:43:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 331 states have (on average 1.1238670694864048) internal successors, (372), 342 states have internal predecessors, (372), 109 states have call successors, (109), 58 states have call predecessors, (109), 73 states have return successors, (140), 113 states have call predecessors, (140), 99 states have call successors, (140) [2023-11-23 06:43:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 621 transitions. [2023-11-23 06:43:40,816 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 621 transitions. Word has length 109 [2023-11-23 06:43:40,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:43:40,816 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 621 transitions. [2023-11-23 06:43:40,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 7 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-23 06:43:40,817 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 621 transitions. [2023-11-23 06:43:40,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-23 06:43:40,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:43:40,818 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:43:40,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 06:43:41,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:41,033 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:43:41,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:43:41,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1243730123, now seen corresponding path program 1 times [2023-11-23 06:43:41,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:43:41,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762548098] [2023-11-23 06:43:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:41,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:43:41,097 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:43:41,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275320180] [2023-11-23 06:43:41,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:41,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:41,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:43:41,099 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:43:41,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 06:43:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:41,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 2851 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-23 06:43:41,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:43:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:43:41,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:43:41,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:43:41,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762548098] [2023-11-23 06:43:41,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:43:41,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275320180] [2023-11-23 06:43:41,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275320180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:43:41,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:43:41,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 06:43:41,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906941537] [2023-11-23 06:43:41,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:43:41,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 06:43:41,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:43:41,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 06:43:41,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-11-23 06:43:41,675 INFO L87 Difference]: Start difference. First operand 514 states and 621 transitions. Second operand has 13 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 4 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-23 06:43:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:43:42,269 INFO L93 Difference]: Finished difference Result 882 states and 1053 transitions. [2023-11-23 06:43:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:43:42,270 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 4 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 115 [2023-11-23 06:43:42,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:43:42,273 INFO L225 Difference]: With dead ends: 882 [2023-11-23 06:43:42,273 INFO L226 Difference]: Without dead ends: 538 [2023-11-23 06:43:42,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:43:42,274 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 11 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:43:42,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1443 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:43:42,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-11-23 06:43:42,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 491. [2023-11-23 06:43:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 319 states have (on average 1.1222570532915361) internal successors, (358), 330 states have internal predecessors, (358), 102 states have call successors, (102), 56 states have call predecessors, (102), 69 states have return successors, (124), 104 states have call predecessors, (124), 92 states have call successors, (124) [2023-11-23 06:43:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 584 transitions. [2023-11-23 06:43:42,317 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 584 transitions. Word has length 115 [2023-11-23 06:43:42,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:43:42,318 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 584 transitions. [2023-11-23 06:43:42,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 4 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-23 06:43:42,318 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 584 transitions. [2023-11-23 06:43:42,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 06:43:42,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:43:42,319 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 06:43:42,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 06:43:42,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:42,534 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:43:42,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:43:42,534 INFO L85 PathProgramCache]: Analyzing trace with hash 475540383, now seen corresponding path program 1 times [2023-11-23 06:43:42,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:43:42,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618381338] [2023-11-23 06:43:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:42,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:43:42,580 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:43:42,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901579430] [2023-11-23 06:43:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:42,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:42,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:43:42,581 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:43:42,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 06:43:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:46,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 236 conjunts are in the unsatisfiable core [2023-11-23 06:43:46,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:43:46,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:43:46,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 Killed by 15