./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_hash_table_remove_harness_negated.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_hash_table_remove_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b9c6758ce95672dce3a80ced0038fb12c5d303c7f51f11e2d6af9ddfb735b727 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:46:10,082 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:46:10,143 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:46:10,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:46:10,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:46:10,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:46:10,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:46:10,180 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:46:10,180 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:46:10,183 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:46:10,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:46:10,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:46:10,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:46:10,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:46:10,185 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:46:10,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:46:10,186 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:46:10,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:46:10,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:46:10,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:46:10,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:46:10,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:46:10,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:46:10,187 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:46:10,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:46:10,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:46:10,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:46:10,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:46:10,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:46:10,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:46:10,190 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:46:10,190 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:46:10,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:46:10,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:46:10,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:46:10,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:46:10,191 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:46:10,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:46:10,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:46:10,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9c6758ce95672dce3a80ced0038fb12c5d303c7f51f11e2d6af9ddfb735b727 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:46:10,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:46:10,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:46:10,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:46:10,475 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:46:10,475 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:46:10,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_hash_table_remove_harness_negated.i [2023-11-23 08:46:11,476 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:46:11,897 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:46:11,897 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_hash_table_remove_harness_negated.i [2023-11-23 08:46:11,931 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb40a96a/2165abeac7484562aa00e2425a479266/FLAG0ea7bb741 [2023-11-23 08:46:11,957 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb40a96a/2165abeac7484562aa00e2425a479266 [2023-11-23 08:46:11,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:46:11,961 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:46:11,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:46:11,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:46:11,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:46:11,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:46:11" (1/1) ... [2023-11-23 08:46:11,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32541755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:11, skipping insertion in model container [2023-11-23 08:46:11,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:46:11" (1/1) ... [2023-11-23 08:46:12,098 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:46:12,305 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_hash_table_remove_harness_negated.i[4495,4508] [2023-11-23 08:46:12,314 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_hash_table_remove_harness_negated.i[4555,4568] [2023-11-23 08:46:12,956 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:12,957 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:12,958 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:12,958 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:12,959 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:12,972 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:12,975 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:12,979 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:12,979 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:12,980 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:12,981 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:12,982 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:12,982 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,245 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:46:13,247 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:46:13,248 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:46:13,249 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:46:13,251 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:46:13,252 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:46:13,253 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:46:13,253 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:46:13,263 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:46:13,265 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:46:13,623 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,624 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,650 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,651 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,655 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,656 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,716 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,717 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,717 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,718 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,718 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,718 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,719 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:46:13,764 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:46:13,779 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_hash_table_remove_harness_negated.i[4495,4508] [2023-11-23 08:46:13,780 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_hash_table_remove_harness_negated.i[4555,4568] [2023-11-23 08:46:13,809 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,810 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,810 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,810 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,811 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,818 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,819 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,819 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,819 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,820 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,820 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,821 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,821 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,850 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:46:13,851 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:46:13,851 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:46:13,852 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:46:13,853 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:46:13,853 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:46:13,853 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:46:13,854 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:46:13,854 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:46:13,855 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:46:13,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7544-7555] [2023-11-23 08:46:13,943 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,943 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,950 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,951 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,953 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,953 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,962 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,963 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,963 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,963 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,963 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,963 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,964 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:46:13,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:46:14,220 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,221 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,221 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,221 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,221 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,221 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,221 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,221 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,221 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,222 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,222 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,222 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,222 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,222 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,222 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,222 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,222 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,222 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:46:14,228 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:46:14,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:14 WrapperNode [2023-11-23 08:46:14,230 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:46:14,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:46:14,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:46:14,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:46:14,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:14" (1/1) ... [2023-11-23 08:46:14,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:14" (1/1) ... [2023-11-23 08:46:14,420 INFO L138 Inliner]: procedures = 773, calls = 2500, calls flagged for inlining = 69, calls inlined = 19, statements flattened = 1094 [2023-11-23 08:46:14,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:46:14,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:46:14,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:46:14,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:46:14,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:14" (1/1) ... [2023-11-23 08:46:14,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:14" (1/1) ... [2023-11-23 08:46:14,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:14" (1/1) ... [2023-11-23 08:46:14,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:14" (1/1) ... [2023-11-23 08:46:14,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:14" (1/1) ... [2023-11-23 08:46:14,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:14" (1/1) ... [2023-11-23 08:46:14,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:14" (1/1) ... [2023-11-23 08:46:14,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:14" (1/1) ... [2023-11-23 08:46:14,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:46:14,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:46:14,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:46:14,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:46:14,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:14" (1/1) ... [2023-11-23 08:46:14,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:46:14,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:46:14,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:46:14,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:46:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 08:46:14,640 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:46:14,640 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:46:14,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 08:46:14,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:46:14,641 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 08:46:14,641 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 08:46:14,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:46:14,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:46:14,641 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-23 08:46:14,642 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-23 08:46:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:46:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:46:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:46:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:46:14,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:46:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:46:14,642 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:46:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 08:46:14,643 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 08:46:14,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 08:46:14,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:46:14,644 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 08:46:14,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 08:46:14,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:46:14,644 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 08:46:14,644 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 08:46:14,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:46:14,645 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-23 08:46:14,645 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-23 08:46:14,645 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 08:46:14,645 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 08:46:14,645 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-23 08:46:14,645 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-23 08:46:14,645 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-23 08:46:14,645 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-23 08:46:14,645 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-23 08:46:14,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-23 08:46:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:46:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 08:46:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-23 08:46:14,646 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-23 08:46:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 08:46:14,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 08:46:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-23 08:46:14,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-23 08:46:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-23 08:46:14,647 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-23 08:46:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-23 08:46:14,648 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-23 08:46:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:46:14,648 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:46:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-23 08:46:14,648 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-23 08:46:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:46:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:46:14,649 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:46:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 08:46:14,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 08:46:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 08:46:14,651 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 08:46:14,652 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2023-11-23 08:46:14,652 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2023-11-23 08:46:14,652 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-23 08:46:14,653 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-23 08:46:14,653 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2023-11-23 08:46:14,653 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2023-11-23 08:46:14,653 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 08:46:14,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 08:46:14,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:46:14,933 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:46:14,935 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:46:15,081 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2023-11-23 08:46:15,082 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !true; [2023-11-23 08:46:15,100 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-23 08:46:15,128 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-23 08:46:16,317 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !true; [2023-11-23 08:46:16,317 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-23 08:46:16,335 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:46:16,409 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:46:16,409 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-23 08:46:16,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:46:16 BoogieIcfgContainer [2023-11-23 08:46:16,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:46:16,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:46:16,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:46:16,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:46:16,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:46:11" (1/3) ... [2023-11-23 08:46:16,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2191f5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:46:16, skipping insertion in model container [2023-11-23 08:46:16,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:46:14" (2/3) ... [2023-11-23 08:46:16,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2191f5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:46:16, skipping insertion in model container [2023-11-23 08:46:16,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:46:16" (3/3) ... [2023-11-23 08:46:16,416 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_remove_harness_negated.i [2023-11-23 08:46:16,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:46:16,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:46:16,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:46:16,473 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;@44ed13fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:46:16,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:46:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 185 states have (on average 1.3243243243243243) internal successors, (245), 180 states have internal predecessors, (245), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-23 08:46:16,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-23 08:46:16,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:46:16,494 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:46:16,495 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:46:16,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:46:16,500 INFO L85 PathProgramCache]: Analyzing trace with hash -960103062, now seen corresponding path program 1 times [2023-11-23 08:46:16,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:46:16,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291839264] [2023-11-23 08:46:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:46:16,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:46:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:16,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:46:16,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291839264] [2023-11-23 08:46:16,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 08:46:16,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937100078] [2023-11-23 08:46:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:46:16,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:46:16,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:46:16,935 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 08:46:16,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:46:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:17,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 2625 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 08:46:17,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:46:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2023-11-23 08:46:17,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:46:17,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937100078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:46:17,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:46:17,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 08:46:17,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106474163] [2023-11-23 08:46:17,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:46:17,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 08:46:17,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:46:17,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 08:46:17,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 08:46:17,741 INFO L87 Difference]: Start difference. First operand has 295 states, 185 states have (on average 1.3243243243243243) internal successors, (245), 180 states have internal predecessors, (245), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-23 08:46:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:46:17,902 INFO L93 Difference]: Finished difference Result 586 states and 900 transitions. [2023-11-23 08:46:17,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 08:46:17,904 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 165 [2023-11-23 08:46:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:46:17,912 INFO L225 Difference]: With dead ends: 586 [2023-11-23 08:46:17,912 INFO L226 Difference]: Without dead ends: 291 [2023-11-23 08:46:17,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 08:46:17,919 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:46:17,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 377 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:46:17,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-23 08:46:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2023-11-23 08:46:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 176 states have (on average 1.2840909090909092) internal successors, (226), 178 states have internal predecessors, (226), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-11-23 08:46:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 398 transitions. [2023-11-23 08:46:17,975 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 398 transitions. Word has length 165 [2023-11-23 08:46:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:46:17,976 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 398 transitions. [2023-11-23 08:46:17,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-23 08:46:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 398 transitions. [2023-11-23 08:46:17,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-23 08:46:17,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:46:17,984 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:46:18,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 08:46:18,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 08:46:18,185 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:46:18,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:46:18,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1964458776, now seen corresponding path program 1 times [2023-11-23 08:46:18,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:46:18,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023907059] [2023-11-23 08:46:18,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:46:18,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:46:18,292 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:46:18,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65176782] [2023-11-23 08:46:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:46:18,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:46:18,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:46:18,309 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:46:18,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:46:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:18,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 2625 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:46:18,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:46:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-23 08:46:18,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:46:18,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:46:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023907059] [2023-11-23 08:46:18,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:46:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65176782] [2023-11-23 08:46:18,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65176782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:46:18,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:46:18,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:46:18,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336336464] [2023-11-23 08:46:18,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:46:18,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:46:18,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:46:18,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:46:18,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:46:18,991 INFO L87 Difference]: Start difference. First operand 291 states and 398 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-23 08:46:19,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:46:19,749 INFO L93 Difference]: Finished difference Result 541 states and 750 transitions. [2023-11-23 08:46:19,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:46:19,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 165 [2023-11-23 08:46:19,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:46:19,754 INFO L225 Difference]: With dead ends: 541 [2023-11-23 08:46:19,754 INFO L226 Difference]: Without dead ends: 297 [2023-11-23 08:46:19,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:46:19,756 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 48 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:46:19,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1343 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:46:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-23 08:46:19,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2023-11-23 08:46:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 180 states have (on average 1.2833333333333334) internal successors, (231), 183 states have internal predecessors, (231), 88 states have call successors, (88), 27 states have call predecessors, (88), 28 states have return successors, (89), 86 states have call predecessors, (89), 86 states have call successors, (89) [2023-11-23 08:46:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 408 transitions. [2023-11-23 08:46:19,792 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 408 transitions. Word has length 165 [2023-11-23 08:46:19,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:46:19,793 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 408 transitions. [2023-11-23 08:46:19,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-23 08:46:19,793 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 408 transitions. [2023-11-23 08:46:19,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-23 08:46:19,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:46:19,796 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:46:19,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:46:19,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 08:46:19,996 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:46:19,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:46:19,997 INFO L85 PathProgramCache]: Analyzing trace with hash -262702936, now seen corresponding path program 1 times [2023-11-23 08:46:19,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:46:19,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738705173] [2023-11-23 08:46:19,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:46:19,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:46:20,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:46:20,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358486227] [2023-11-23 08:46:20,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:46:20,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:46:20,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:46:20,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:46:20,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:46:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:20,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:46:20,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:46:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-23 08:46:20,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:46:20,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:46:20,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738705173] [2023-11-23 08:46:20,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:46:20,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358486227] [2023-11-23 08:46:20,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358486227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:46:20,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:46:20,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:46:20,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924512949] [2023-11-23 08:46:20,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:46:20,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:46:20,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:46:20,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:46:20,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:46:20,760 INFO L87 Difference]: Start difference. First operand 297 states and 408 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-23 08:46:21,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:46:21,421 INFO L93 Difference]: Finished difference Result 518 states and 717 transitions. [2023-11-23 08:46:21,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:46:21,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) Word has length 165 [2023-11-23 08:46:21,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:46:21,424 INFO L225 Difference]: With dead ends: 518 [2023-11-23 08:46:21,424 INFO L226 Difference]: Without dead ends: 291 [2023-11-23 08:46:21,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:46:21,425 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 63 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:46:21,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1317 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:46:21,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-23 08:46:21,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2023-11-23 08:46:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 176 states have (on average 1.2784090909090908) internal successors, (225), 178 states have internal predecessors, (225), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-11-23 08:46:21,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 397 transitions. [2023-11-23 08:46:21,439 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 397 transitions. Word has length 165 [2023-11-23 08:46:21,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:46:21,440 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 397 transitions. [2023-11-23 08:46:21,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-23 08:46:21,441 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 397 transitions. [2023-11-23 08:46:21,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-23 08:46:21,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:46:21,443 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:46:21,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:46:21,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:46:21,660 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:46:21,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:46:21,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1109104362, now seen corresponding path program 1 times [2023-11-23 08:46:21,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:46:21,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080934599] [2023-11-23 08:46:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:46:21,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:46:21,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:46:21,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593206869] [2023-11-23 08:46:21,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:46:21,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:46:21,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:46:21,751 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:46:21,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:46:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:22,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 2640 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:46:22,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:46:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-11-23 08:46:22,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:46:22,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:46:22,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080934599] [2023-11-23 08:46:22,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:46:22,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593206869] [2023-11-23 08:46:22,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593206869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:46:22,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:46:22,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:46:22,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873268200] [2023-11-23 08:46:22,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:46:22,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:46:22,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:46:22,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:46:22,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:46:22,335 INFO L87 Difference]: Start difference. First operand 291 states and 397 transitions. Second operand has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-23 08:46:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:46:22,539 INFO L93 Difference]: Finished difference Result 551 states and 755 transitions. [2023-11-23 08:46:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:46:22,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 165 [2023-11-23 08:46:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:46:22,542 INFO L225 Difference]: With dead ends: 551 [2023-11-23 08:46:22,542 INFO L226 Difference]: Without dead ends: 295 [2023-11-23 08:46:22,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:46:22,544 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:46:22,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1472 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:46:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-23 08:46:22,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2023-11-23 08:46:22,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 179 states have (on average 1.2737430167597765) internal successors, (228), 181 states have internal predecessors, (228), 87 states have call successors, (87), 27 states have call predecessors, (87), 28 states have return successors, (86), 86 states have call predecessors, (86), 85 states have call successors, (86) [2023-11-23 08:46:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 401 transitions. [2023-11-23 08:46:22,554 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 401 transitions. Word has length 165 [2023-11-23 08:46:22,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:46:22,555 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 401 transitions. [2023-11-23 08:46:22,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-23 08:46:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 401 transitions. [2023-11-23 08:46:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-23 08:46:22,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:46:22,557 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:46:22,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 08:46:22,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:46:22,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:46:22,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:46:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1194690660, now seen corresponding path program 1 times [2023-11-23 08:46:22,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:46:22,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063327567] [2023-11-23 08:46:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:46:22,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:46:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:46:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:46:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:46:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:46:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:46:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:46:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:46:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:46:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:46:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:46:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:46:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:46:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:46:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:46:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:46:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:46:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:46:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:46:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:46:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:46:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:46:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 08:46:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:46:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:46:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:46:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 08:46:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-23 08:46:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 08:46:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-23 08:46:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 08:46:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-11-23 08:46:24,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:46:24,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063327567] [2023-11-23 08:46:24,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063327567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:46:24,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563600350] [2023-11-23 08:46:24,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:46:24,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:46:24,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:46:24,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:46:24,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:46:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:46:24,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 08:46:24,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:46:25,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:46:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-23 08:46:25,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:46:25,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563600350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:46:25,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:46:25,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2023-11-23 08:46:25,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349103438] [2023-11-23 08:46:25,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:46:25,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:46:25,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:46:25,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:46:25,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-11-23 08:46:25,200 INFO L87 Difference]: Start difference. First operand 295 states and 401 transitions. Second operand has 11 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-23 08:46:28,121 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 08:46:30,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:32,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:34,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:36,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:38,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:40,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:42,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:44,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:47,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:49,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:51,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:53,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:55,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:57,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:46:59,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:47:01,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:47:03,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:47:05,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:47:07,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:47:09,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:47:09,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:47:09,829 INFO L93 Difference]: Finished difference Result 595 states and 800 transitions. [2023-11-23 08:47:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:47:09,830 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 169 [2023-11-23 08:47:09,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:47:09,832 INFO L225 Difference]: With dead ends: 595 [2023-11-23 08:47:09,832 INFO L226 Difference]: Without dead ends: 349 [2023-11-23 08:47:09,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2023-11-23 08:47:09,833 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 77 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 15 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:47:09,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 3042 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 691 Invalid, 21 Unknown, 0 Unchecked, 44.5s Time] [2023-11-23 08:47:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-11-23 08:47:09,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 348. [2023-11-23 08:47:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 213 states have (on average 1.2535211267605635) internal successors, (267), 216 states have internal predecessors, (267), 95 states have call successors, (95), 37 states have call predecessors, (95), 39 states have return successors, (96), 94 states have call predecessors, (96), 93 states have call successors, (96) [2023-11-23 08:47:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 458 transitions. [2023-11-23 08:47:09,849 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 458 transitions. Word has length 169 [2023-11-23 08:47:09,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:47:09,849 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 458 transitions. [2023-11-23 08:47:09,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-23 08:47:09,850 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 458 transitions. [2023-11-23 08:47:09,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-23 08:47:09,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:47:09,851 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:47:09,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 08:47:10,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:47:10,052 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:47:10,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:47:10,052 INFO L85 PathProgramCache]: Analyzing trace with hash -99400353, now seen corresponding path program 1 times [2023-11-23 08:47:10,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:47:10,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289103807] [2023-11-23 08:47:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:10,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:47:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:47:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:47:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:47:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:47:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:47:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:47:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:47:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:47:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:47:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:47:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:47:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:47:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:47:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:47:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:47:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:47:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 08:47:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:47:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:47:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-23 08:47:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-23 08:47:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-23 08:47:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-23 08:47:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:11,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-23 08:47:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-23 08:47:11,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:47:11,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289103807] [2023-11-23 08:47:11,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289103807] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:47:11,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082391695] [2023-11-23 08:47:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:11,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:47:11,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:47:11,016 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:47:11,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 08:47:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:11,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-23 08:47:11,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:47:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-11-23 08:47:11,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:47:11,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082391695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:47:11,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:47:11,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2023-11-23 08:47:11,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674499810] [2023-11-23 08:47:11,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:47:11,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:47:11,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:47:11,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:47:11,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:47:11,678 INFO L87 Difference]: Start difference. First operand 348 states and 458 transitions. Second operand has 9 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-23 08:47:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:47:12,248 INFO L93 Difference]: Finished difference Result 607 states and 821 transitions. [2023-11-23 08:47:12,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 08:47:12,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 175 [2023-11-23 08:47:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:47:12,251 INFO L225 Difference]: With dead ends: 607 [2023-11-23 08:47:12,251 INFO L226 Difference]: Without dead ends: 356 [2023-11-23 08:47:12,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:47:12,252 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 4 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:47:12,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2702 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:47:12,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-23 08:47:12,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 348. [2023-11-23 08:47:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 213 states have (on average 1.2488262910798122) internal successors, (266), 216 states have internal predecessors, (266), 95 states have call successors, (95), 37 states have call predecessors, (95), 39 states have return successors, (96), 94 states have call predecessors, (96), 93 states have call successors, (96) [2023-11-23 08:47:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 457 transitions. [2023-11-23 08:47:12,275 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 457 transitions. Word has length 175 [2023-11-23 08:47:12,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:47:12,276 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 457 transitions. [2023-11-23 08:47:12,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-23 08:47:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 457 transitions. [2023-11-23 08:47:12,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 08:47:12,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:47:12,279 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:47:12,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:47:12,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:47:12,492 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:47:12,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:47:12,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1131801105, now seen corresponding path program 1 times [2023-11-23 08:47:12,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:47:12,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176207132] [2023-11-23 08:47:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:12,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:47:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:12,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:12,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:47:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:47:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:12,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:47:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:12,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:12,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:47:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:47:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:47:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:47:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:47:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:47:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:47:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:47:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:47:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:47:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:47:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:47:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 08:47:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 08:47:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:47:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 08:47:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-23 08:47:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-23 08:47:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-23 08:47:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 08:47:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-11-23 08:47:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2023-11-23 08:47:13,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:47:13,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176207132] [2023-11-23 08:47:13,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176207132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:47:13,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:47:13,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 08:47:13,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482245715] [2023-11-23 08:47:13,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:47:13,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:47:13,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:47:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:47:13,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:47:13,177 INFO L87 Difference]: Start difference. First operand 348 states and 457 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (34), 5 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 08:47:14,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:47:14,980 INFO L93 Difference]: Finished difference Result 567 states and 764 transitions. [2023-11-23 08:47:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 08:47:14,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (34), 5 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 181 [2023-11-23 08:47:14,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:47:14,983 INFO L225 Difference]: With dead ends: 567 [2023-11-23 08:47:14,983 INFO L226 Difference]: Without dead ends: 360 [2023-11-23 08:47:14,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:47:14,985 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 238 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:47:14,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 712 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 08:47:14,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-23 08:47:15,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 352. [2023-11-23 08:47:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 215 states have (on average 1.2465116279069768) internal successors, (268), 220 states have internal predecessors, (268), 95 states have call successors, (95), 37 states have call predecessors, (95), 41 states have return successors, (104), 94 states have call predecessors, (104), 93 states have call successors, (104) [2023-11-23 08:47:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 467 transitions. [2023-11-23 08:47:15,017 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 467 transitions. Word has length 181 [2023-11-23 08:47:15,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:47:15,018 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 467 transitions. [2023-11-23 08:47:15,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (34), 5 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 08:47:15,018 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 467 transitions. [2023-11-23 08:47:15,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-23 08:47:15,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:47:15,020 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:47:15,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 08:47:15,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:47:15,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:47:15,020 INFO L85 PathProgramCache]: Analyzing trace with hash 850103423, now seen corresponding path program 1 times [2023-11-23 08:47:15,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:47:15,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757676360] [2023-11-23 08:47:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:15,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:47:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:47:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:47:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:47:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:47:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:47:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:47:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:47:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:47:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:47:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:47:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:47:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:47:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:47:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:47:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:47:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 08:47:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 08:47:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:47:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 08:47:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-23 08:47:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-23 08:47:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-23 08:47:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 08:47:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 08:47:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:16,717 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-11-23 08:47:16,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:47:16,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757676360] [2023-11-23 08:47:16,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757676360] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:47:16,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234864401] [2023-11-23 08:47:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:16,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:47:16,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:47:16,719 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:47:16,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 08:47:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:17,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 08:47:17,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:47:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 73 proven. 12 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-11-23 08:47:17,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:47:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2023-11-23 08:47:17,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234864401] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 08:47:17,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:47:17,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17, 10] total 32 [2023-11-23 08:47:17,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658465494] [2023-11-23 08:47:17,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:47:17,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:47:17,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:47:17,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:47:17,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2023-11-23 08:47:17,981 INFO L87 Difference]: Start difference. First operand 352 states and 467 transitions. Second operand has 11 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-23 08:47:18,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:47:18,753 INFO L93 Difference]: Finished difference Result 573 states and 782 transitions. [2023-11-23 08:47:18,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:47:18,753 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) Word has length 187 [2023-11-23 08:47:18,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:47:18,755 INFO L225 Difference]: With dead ends: 573 [2023-11-23 08:47:18,755 INFO L226 Difference]: Without dead ends: 364 [2023-11-23 08:47:18,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2023-11-23 08:47:18,757 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 2 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3380 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:47:18,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3380 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:47:18,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-23 08:47:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 355. [2023-11-23 08:47:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 217 states have (on average 1.2442396313364055) internal successors, (270), 222 states have internal predecessors, (270), 95 states have call successors, (95), 37 states have call predecessors, (95), 42 states have return successors, (105), 95 states have call predecessors, (105), 93 states have call successors, (105) [2023-11-23 08:47:18,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 470 transitions. [2023-11-23 08:47:18,781 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 470 transitions. Word has length 187 [2023-11-23 08:47:18,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:47:18,782 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 470 transitions. [2023-11-23 08:47:18,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-23 08:47:18,783 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 470 transitions. [2023-11-23 08:47:18,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-23 08:47:18,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:47:18,785 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:47:18,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 08:47:19,002 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 08:47:19,002 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:47:19,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:47:19,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1898425798, now seen corresponding path program 1 times [2023-11-23 08:47:19,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:47:19,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152011994] [2023-11-23 08:47:19,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:19,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:47:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:47:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:47:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:47:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:47:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:47:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:47:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:47:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:47:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:47:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:47:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:47:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:47:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:47:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:47:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:47:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 08:47:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 08:47:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:47:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 08:47:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-23 08:47:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-23 08:47:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-23 08:47:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 08:47:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-23 08:47:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-11-23 08:47:20,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:47:20,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152011994] [2023-11-23 08:47:20,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152011994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:47:20,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120771794] [2023-11-23 08:47:20,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:20,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:47:20,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:47:20,865 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:47:20,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 08:47:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:21,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 08:47:21,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:47:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-23 08:47:21,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:47:21,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120771794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:47:21,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:47:21,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2023-11-23 08:47:21,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649791780] [2023-11-23 08:47:21,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:47:21,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:47:21,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:47:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:47:21,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2023-11-23 08:47:21,705 INFO L87 Difference]: Start difference. First operand 355 states and 470 transitions. Second operand has 12 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 3 states have call successors, (35), 2 states have call predecessors, (35), 6 states have return successors, (33), 5 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-23 08:47:22,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:47:22,501 INFO L93 Difference]: Finished difference Result 620 states and 839 transitions. [2023-11-23 08:47:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:47:22,501 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 3 states have call successors, (35), 2 states have call predecessors, (35), 6 states have return successors, (33), 5 states have call predecessors, (33), 3 states have call successors, (33) Word has length 189 [2023-11-23 08:47:22,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:47:22,504 INFO L225 Difference]: With dead ends: 620 [2023-11-23 08:47:22,504 INFO L226 Difference]: Without dead ends: 363 [2023-11-23 08:47:22,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=748, Unknown=0, NotChecked=0, Total=812 [2023-11-23 08:47:22,507 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 4 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:47:22,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3723 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:47:22,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-23 08:47:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 357. [2023-11-23 08:47:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 218 states have (on average 1.2431192660550459) internal successors, (271), 224 states have internal predecessors, (271), 95 states have call successors, (95), 37 states have call predecessors, (95), 43 states have return successors, (106), 95 states have call predecessors, (106), 93 states have call successors, (106) [2023-11-23 08:47:22,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 472 transitions. [2023-11-23 08:47:22,529 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 472 transitions. Word has length 189 [2023-11-23 08:47:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:47:22,530 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 472 transitions. [2023-11-23 08:47:22,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 3 states have call successors, (35), 2 states have call predecessors, (35), 6 states have return successors, (33), 5 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-23 08:47:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 472 transitions. [2023-11-23 08:47:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-23 08:47:22,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:47:22,532 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:47:22,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 08:47:22,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 08:47:22,748 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:47:22,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:47:22,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1895854027, now seen corresponding path program 2 times [2023-11-23 08:47:22,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:47:22,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359667688] [2023-11-23 08:47:22,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:22,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:47:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:23,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:23,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:23,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:47:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:23,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:47:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:23,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:47:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:23,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:23,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:23,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:23,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:47:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:47:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:23,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:23,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:47:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:47:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:47:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:47:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:47:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:47:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:47:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:47:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:47:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:47:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:47:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:47:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-23 08:47:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 08:47:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 08:47:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-23 08:47:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-23 08:47:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-23 08:47:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:47:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2023-11-23 08:47:24,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:47:24,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359667688] [2023-11-23 08:47:24,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359667688] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:47:24,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157750540] [2023-11-23 08:47:24,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:47:24,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:47:24,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:47:24,354 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:47:24,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 08:47:25,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:47:25,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:47:25,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 2733 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-23 08:47:25,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:47:25,300 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-11-23 08:47:25,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:47:25,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2023-11-23 08:47:25,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:47:25,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:47:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-23 08:47:25,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:47:26,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157750540] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:47:26,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:47:26,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 34 [2023-11-23 08:47:26,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066683231] [2023-11-23 08:47:26,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:47:26,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-23 08:47:26,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:47:26,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-23 08:47:26,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1380, Unknown=0, NotChecked=0, Total=1482 [2023-11-23 08:47:26,393 INFO L87 Difference]: Start difference. First operand 357 states and 472 transitions. Second operand has 34 states, 27 states have (on average 4.851851851851852) internal successors, (131), 28 states have internal predecessors, (131), 13 states have call successors, (68), 7 states have call predecessors, (68), 9 states have return successors, (63), 10 states have call predecessors, (63), 12 states have call successors, (63) [2023-11-23 08:47:39,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:47:39,978 INFO L93 Difference]: Finished difference Result 704 states and 964 transitions. [2023-11-23 08:47:39,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-23 08:47:39,979 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 27 states have (on average 4.851851851851852) internal successors, (131), 28 states have internal predecessors, (131), 13 states have call successors, (68), 7 states have call predecessors, (68), 9 states have return successors, (63), 10 states have call predecessors, (63), 12 states have call successors, (63) Word has length 191 [2023-11-23 08:47:39,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:47:39,980 INFO L225 Difference]: With dead ends: 704 [2023-11-23 08:47:39,980 INFO L226 Difference]: Without dead ends: 385 [2023-11-23 08:47:39,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=498, Invalid=5052, Unknown=0, NotChecked=0, Total=5550 [2023-11-23 08:47:39,983 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 449 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 9714 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 9991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 9714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:47:39,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 2482 Invalid, 9991 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [277 Valid, 9714 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2023-11-23 08:47:39,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-23 08:47:39,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 357. [2023-11-23 08:47:39,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 218 states have (on average 1.238532110091743) internal successors, (270), 224 states have internal predecessors, (270), 95 states have call successors, (95), 37 states have call predecessors, (95), 43 states have return successors, (108), 95 states have call predecessors, (108), 93 states have call successors, (108) [2023-11-23 08:47:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 473 transitions. [2023-11-23 08:47:40,000 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 473 transitions. Word has length 191 [2023-11-23 08:47:40,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:47:40,000 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 473 transitions. [2023-11-23 08:47:40,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 27 states have (on average 4.851851851851852) internal successors, (131), 28 states have internal predecessors, (131), 13 states have call successors, (68), 7 states have call predecessors, (68), 9 states have return successors, (63), 10 states have call predecessors, (63), 12 states have call successors, (63) [2023-11-23 08:47:40,000 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 473 transitions. [2023-11-23 08:47:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-23 08:47:40,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:47:40,002 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:47:40,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 08:47:40,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 08:47:40,212 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:47:40,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:47:40,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1087333958, now seen corresponding path program 1 times [2023-11-23 08:47:40,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:47:40,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506602594] [2023-11-23 08:47:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:40,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:47:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:47:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:47:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:47:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:47:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:47:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:47:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:47:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:47:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:47:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:47:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:47:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:47:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:47:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:47:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:47:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:40,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 08:47:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:41,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:47:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:41,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 08:47:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:41,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 08:47:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:41,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:47:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:41,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:47:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:41,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-23 08:47:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:41,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-23 08:47:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-11-23 08:47:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2023-11-23 08:47:41,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:47:41,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506602594] [2023-11-23 08:47:41,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506602594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:47:41,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877764300] [2023-11-23 08:47:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:41,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:47:41,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:47:41,109 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:47:41,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 08:47:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:41,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 2785 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-23 08:47:41,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:47:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2023-11-23 08:47:41,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:47:41,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877764300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:47:41,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:47:41,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2023-11-23 08:47:41,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133460757] [2023-11-23 08:47:41,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:47:41,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:47:41,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:47:41,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:47:41,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:47:41,949 INFO L87 Difference]: Start difference. First operand 357 states and 473 transitions. Second operand has 9 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 08:47:42,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:47:42,463 INFO L93 Difference]: Finished difference Result 586 states and 804 transitions. [2023-11-23 08:47:42,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 08:47:42,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 205 [2023-11-23 08:47:42,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:47:42,466 INFO L225 Difference]: With dead ends: 586 [2023-11-23 08:47:42,466 INFO L226 Difference]: Without dead ends: 364 [2023-11-23 08:47:42,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:47:42,467 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 4 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:47:42,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2733 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:47:42,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-23 08:47:42,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 362. [2023-11-23 08:47:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 221 states have (on average 1.2352941176470589) internal successors, (273), 228 states have internal predecessors, (273), 95 states have call successors, (95), 37 states have call predecessors, (95), 45 states have return successors, (119), 96 states have call predecessors, (119), 93 states have call successors, (119) [2023-11-23 08:47:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 487 transitions. [2023-11-23 08:47:42,484 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 487 transitions. Word has length 205 [2023-11-23 08:47:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:47:42,485 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 487 transitions. [2023-11-23 08:47:42,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 08:47:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 487 transitions. [2023-11-23 08:47:42,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-23 08:47:42,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:47:42,487 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:47:42,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-23 08:47:42,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 08:47:42,701 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:47:42,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:47:42,701 INFO L85 PathProgramCache]: Analyzing trace with hash -148593174, now seen corresponding path program 1 times [2023-11-23 08:47:42,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:47:42,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747069242] [2023-11-23 08:47:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:42,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:47:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:47:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:47:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:47:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:47:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:47:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:47:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:47:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:47:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:47:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:47:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:47:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:47:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:47:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:47:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:47:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 08:47:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:47:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 08:47:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 08:47:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:47:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:47:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-23 08:47:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-23 08:47:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-11-23 08:47:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2023-11-23 08:47:43,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:47:43,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747069242] [2023-11-23 08:47:43,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747069242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:47:43,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269614085] [2023-11-23 08:47:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:43,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:47:43,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:47:43,642 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:47:43,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 08:47:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:44,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 08:47:44,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:47:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 248 proven. 3 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-11-23 08:47:44,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:47:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 48 proven. 14 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2023-11-23 08:47:44,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269614085] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:47:44,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:47:44,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 14] total 30 [2023-11-23 08:47:44,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083019204] [2023-11-23 08:47:44,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:47:44,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-23 08:47:44,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:47:44,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-23 08:47:44,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=802, Unknown=0, NotChecked=0, Total=870 [2023-11-23 08:47:44,954 INFO L87 Difference]: Start difference. First operand 362 states and 487 transitions. Second operand has 30 states, 23 states have (on average 4.608695652173913) internal successors, (106), 20 states have internal predecessors, (106), 6 states have call successors, (55), 6 states have call predecessors, (55), 10 states have return successors, (53), 9 states have call predecessors, (53), 6 states have call successors, (53) [2023-11-23 08:47:50,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:47:50,487 INFO L93 Difference]: Finished difference Result 604 states and 840 transitions. [2023-11-23 08:47:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-23 08:47:50,488 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 23 states have (on average 4.608695652173913) internal successors, (106), 20 states have internal predecessors, (106), 6 states have call successors, (55), 6 states have call predecessors, (55), 10 states have return successors, (53), 9 states have call predecessors, (53), 6 states have call successors, (53) Word has length 211 [2023-11-23 08:47:50,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:47:50,489 INFO L225 Difference]: With dead ends: 604 [2023-11-23 08:47:50,490 INFO L226 Difference]: Without dead ends: 370 [2023-11-23 08:47:50,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=255, Invalid=2195, Unknown=0, NotChecked=0, Total=2450 [2023-11-23 08:47:50,491 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 287 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 7129 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 7229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 7129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:47:50,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 2590 Invalid, 7229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 7129 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-23 08:47:50,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-23 08:47:50,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 362. [2023-11-23 08:47:50,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 221 states have (on average 1.2352941176470589) internal successors, (273), 228 states have internal predecessors, (273), 95 states have call successors, (95), 37 states have call predecessors, (95), 45 states have return successors, (118), 96 states have call predecessors, (118), 93 states have call successors, (118) [2023-11-23 08:47:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 486 transitions. [2023-11-23 08:47:50,505 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 486 transitions. Word has length 211 [2023-11-23 08:47:50,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:47:50,505 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 486 transitions. [2023-11-23 08:47:50,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 23 states have (on average 4.608695652173913) internal successors, (106), 20 states have internal predecessors, (106), 6 states have call successors, (55), 6 states have call predecessors, (55), 10 states have return successors, (53), 9 states have call predecessors, (53), 6 states have call successors, (53) [2023-11-23 08:47:50,506 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 486 transitions. [2023-11-23 08:47:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-23 08:47:50,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:47:50,507 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:47:50,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 08:47:50,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 08:47:50,724 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:47:50,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:47:50,724 INFO L85 PathProgramCache]: Analyzing trace with hash 421660031, now seen corresponding path program 1 times [2023-11-23 08:47:50,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:47:50,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014178231] [2023-11-23 08:47:50,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:50,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:47:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:51,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:51,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:51,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:47:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:51,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:47:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:51,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:47:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:51,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:51,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:51,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:51,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:47:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:51,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:47:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:51,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:51,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:47:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:51,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:47:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:47:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:47:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:47:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:47:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:47:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:47:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:47:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:47:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:47:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 08:47:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 08:47:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-23 08:47:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 08:47:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-11-23 08:47:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-23 08:47:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-11-23 08:47:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-11-23 08:47:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2023-11-23 08:47:52,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:47:52,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014178231] [2023-11-23 08:47:52,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014178231] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:47:52,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668998406] [2023-11-23 08:47:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:52,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:47:52,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:47:52,216 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:47:52,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 08:47:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:53,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 2851 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-23 08:47:53,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:47:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-11-23 08:47:53,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:47:53,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668998406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:47:53,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:47:53,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 18 [2023-11-23 08:47:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768754145] [2023-11-23 08:47:53,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:47:53,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:47:53,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:47:53,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:47:53,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:47:53,109 INFO L87 Difference]: Start difference. First operand 362 states and 486 transitions. Second operand has 12 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 3 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (36), 5 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-23 08:47:53,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:47:53,941 INFO L93 Difference]: Finished difference Result 597 states and 824 transitions. [2023-11-23 08:47:53,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:47:53,941 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 3 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (36), 5 states have call predecessors, (36), 3 states have call successors, (36) Word has length 219 [2023-11-23 08:47:53,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:47:53,943 INFO L225 Difference]: With dead ends: 597 [2023-11-23 08:47:53,943 INFO L226 Difference]: Without dead ends: 364 [2023-11-23 08:47:53,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:47:53,944 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 4 mSDsluCounter, 3422 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3771 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:47:53,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3771 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:47:53,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-23 08:47:53,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 360. [2023-11-23 08:47:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 220 states have (on average 1.2363636363636363) internal successors, (272), 226 states have internal predecessors, (272), 95 states have call successors, (95), 37 states have call predecessors, (95), 44 states have return successors, (114), 96 states have call predecessors, (114), 93 states have call successors, (114) [2023-11-23 08:47:53,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 481 transitions. [2023-11-23 08:47:53,959 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 481 transitions. Word has length 219 [2023-11-23 08:47:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:47:53,959 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 481 transitions. [2023-11-23 08:47:53,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 3 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (36), 5 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-23 08:47:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 481 transitions. [2023-11-23 08:47:53,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-23 08:47:53,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:47:53,961 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:47:53,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 08:47:54,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 08:47:54,168 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:47:54,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:47:54,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1645454172, now seen corresponding path program 1 times [2023-11-23 08:47:54,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:47:54,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159650292] [2023-11-23 08:47:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:54,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:47:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:47:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:47:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:47:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:47:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:47:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:47:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:47:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:47:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:47:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:47:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:47:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:47:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:47:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:47:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:47:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:47:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:47:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-23 08:47:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-23 08:47:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-23 08:47:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-23 08:47:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:47:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-23 08:47:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-23 08:47:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-11-23 08:47:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-23 08:47:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:47:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-23 08:47:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2023-11-23 08:47:55,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:47:55,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159650292] [2023-11-23 08:47:55,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159650292] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:47:55,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364890310] [2023-11-23 08:47:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:55,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:47:55,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:47:55,764 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:47:55,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 08:47:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:56,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 2855 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:47:56,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:47:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-11-23 08:47:56,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:47:56,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364890310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:47:56,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:47:56,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 10 [2023-11-23 08:47:56,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890247558] [2023-11-23 08:47:56,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:47:56,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:47:56,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:47:56,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:47:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:47:56,921 INFO L87 Difference]: Start difference. First operand 360 states and 481 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-23 08:47:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:47:57,296 INFO L93 Difference]: Finished difference Result 665 states and 896 transitions. [2023-11-23 08:47:57,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:47:57,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 221 [2023-11-23 08:47:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:47:57,298 INFO L225 Difference]: With dead ends: 665 [2023-11-23 08:47:57,298 INFO L226 Difference]: Without dead ends: 362 [2023-11-23 08:47:57,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:47:57,299 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 3 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:47:57,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1669 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:47:57,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-23 08:47:57,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 360. [2023-11-23 08:47:57,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 220 states have (on average 1.2227272727272727) internal successors, (269), 226 states have internal predecessors, (269), 95 states have call successors, (95), 37 states have call predecessors, (95), 44 states have return successors, (114), 96 states have call predecessors, (114), 93 states have call successors, (114) [2023-11-23 08:47:57,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 478 transitions. [2023-11-23 08:47:57,314 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 478 transitions. Word has length 221 [2023-11-23 08:47:57,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:47:57,315 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 478 transitions. [2023-11-23 08:47:57,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-23 08:47:57,315 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 478 transitions. [2023-11-23 08:47:57,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-23 08:47:57,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:47:57,316 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:47:57,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-23 08:47:57,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 08:47:57,532 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:47:57,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:47:57,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1843892442, now seen corresponding path program 1 times [2023-11-23 08:47:57,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:47:57,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235627448] [2023-11-23 08:47:57,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:57,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:47:57,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:47:57,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352255222] [2023-11-23 08:47:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:47:57,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:47:57,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:47:57,629 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:47:57,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 08:47:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:47:59,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 346 conjunts are in the unsatisfiable core [2023-11-23 08:47:59,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:47:59,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:47:59,614 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 08:47:59,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-23 08:47:59,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 08:48:11,976 WARN L293 SmtUtils]: Spent 9.51s on a formula simplification. DAG size of input: 848 DAG size of output: 224 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-23 08:48:11,976 INFO L349 Elim1Store]: treesize reduction 2872, result has 14.2 percent of original size [2023-11-23 08:48:11,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 19 new quantified variables, introduced 156 case distinctions, treesize of input 1025 treesize of output 1772 Killed by 15