./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_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_array_list_set_at_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 661cd2cbf3d9840c04d4d53ba6b9af71b83d3629a17112d42635cc93577e3805 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:04:31,946 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:04:31,990 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:04:32,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:04:32,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:04:32,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:04:32,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:04:32,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:04:32,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:04:32,043 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:04:32,043 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:04:32,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:04:32,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:04:32,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:04:32,045 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:04:32,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:04:32,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:04:32,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:04:32,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:04:32,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:04:32,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:04:32,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:04:32,048 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:04:32,048 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:04:32,049 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:04:32,049 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:04:32,049 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:04:32,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:04:32,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:04:32,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:04:32,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:04:32,051 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:04:32,051 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:04:32,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:04:32,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:04:32,051 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:04:32,052 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:04:32,052 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:04:32,052 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:04:32,052 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 661cd2cbf3d9840c04d4d53ba6b9af71b83d3629a17112d42635cc93577e3805 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:04:32,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:04:32,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:04:32,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:04:32,261 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:04:32,261 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:04:32,262 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_harness_negated.i [2023-11-23 08:04:33,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:04:33,706 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:04:33,707 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_harness_negated.i [2023-11-23 08:04:33,735 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce960d3e8/5450415a47b246aaa3f97b2b4d2cce30/FLAG3392e4d20 [2023-11-23 08:04:33,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce960d3e8/5450415a47b246aaa3f97b2b4d2cce30 [2023-11-23 08:04:33,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:04:33,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:04:33,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:04:33,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:04:33,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:04:33,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:04:33" (1/1) ... [2023-11-23 08:04:33,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a679f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:33, skipping insertion in model container [2023-11-23 08:04:33,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:04:33" (1/1) ... [2023-11-23 08:04:33,837 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:04:34,023 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_harness_negated.i[4495,4508] [2023-11-23 08:04:34,030 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_harness_negated.i[4555,4568] [2023-11-23 08:04:34,752 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:34,756 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:34,757 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:34,776 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:34,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:34,792 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:34,793 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:34,795 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:34,796 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:34,798 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:34,799 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:34,801 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:34,801 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,024 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:04:35,025 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:04:35,026 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:04:35,026 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:04:35,027 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:04:35,028 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:04:35,028 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:04:35,028 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:04:35,029 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:04:35,029 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:04:35,098 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,103 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,134 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,134 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,134 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:04:35,156 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:04:35,165 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_harness_negated.i[4495,4508] [2023-11-23 08:04:35,165 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_harness_negated.i[4555,4568] [2023-11-23 08:04:35,193 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,194 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,194 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,195 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,195 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,199 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,199 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,200 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,200 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,201 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,201 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,202 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,202 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,221 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:04:35,222 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:04:35,222 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:04:35,222 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:04:35,223 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:04:35,223 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:04:35,224 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:04:35,224 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:04:35,224 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:04:35,225 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:04:35,240 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,244 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,247 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7738-7749] [2023-11-23 08:04:35,324 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,324 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,324 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:35,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:04:35,504 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,505 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,505 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,505 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,505 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,507 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,507 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,507 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,507 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,507 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,508 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,508 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,508 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,508 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,509 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:35,514 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:04:35,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:35 WrapperNode [2023-11-23 08:04:35,515 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:04:35,516 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:04:35,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:04:35,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:04:35,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:35" (1/1) ... [2023-11-23 08:04:35,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:35" (1/1) ... [2023-11-23 08:04:35,661 INFO L138 Inliner]: procedures = 690, calls = 1682, calls flagged for inlining = 51, calls inlined = 11, statements flattened = 850 [2023-11-23 08:04:35,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:04:35,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:04:35,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:04:35,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:04:35,671 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:35" (1/1) ... [2023-11-23 08:04:35,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:35" (1/1) ... [2023-11-23 08:04:35,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:35" (1/1) ... [2023-11-23 08:04:35,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:35" (1/1) ... [2023-11-23 08:04:35,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:35" (1/1) ... [2023-11-23 08:04:35,736 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:35" (1/1) ... [2023-11-23 08:04:35,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:35" (1/1) ... [2023-11-23 08:04:35,745 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:35" (1/1) ... [2023-11-23 08:04:35,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:04:35,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:04:35,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:04:35,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:04:35,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:35" (1/1) ... [2023-11-23 08:04:35,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:04:35,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:35,794 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 08:04:35,800 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 08:04:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:04:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 08:04:35,842 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 08:04:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 08:04:35,843 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 08:04:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:04:35,843 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:04:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 08:04:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 08:04:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:04:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 08:04:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 08:04:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:04:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:04:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:04:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:04:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:04:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 08:04:35,845 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 08:04:35,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:04:35,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:04:35,846 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:04:35,846 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:04:35,846 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:04:35,846 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:04:35,847 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 08:04:35,847 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 08:04:35,847 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 08:04:35,847 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 08:04:35,847 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 08:04:35,848 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 08:04:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 08:04:35,848 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 08:04:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:04:35,848 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:04:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 08:04:35,849 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 08:04:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-23 08:04:35,849 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-23 08:04:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:04:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 08:04:35,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 08:04:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:04:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:04:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:04:35,850 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:04:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 08:04:35,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 08:04:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 08:04:35,850 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 08:04:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:04:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 08:04:35,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 08:04:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2023-11-23 08:04:35,851 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2023-11-23 08:04:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:04:36,138 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:04:36,140 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:04:36,642 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:04:36,719 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:04:36,719 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 08:04:36,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:36 BoogieIcfgContainer [2023-11-23 08:04:36,720 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:04:36,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:04:36,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:04:36,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:04:36,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:04:33" (1/3) ... [2023-11-23 08:04:36,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1642577d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:04:36, skipping insertion in model container [2023-11-23 08:04:36,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:35" (2/3) ... [2023-11-23 08:04:36,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1642577d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:04:36, skipping insertion in model container [2023-11-23 08:04:36,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:36" (3/3) ... [2023-11-23 08:04:36,726 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness_negated.i [2023-11-23 08:04:36,737 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:04:36,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:04:36,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:04:36,775 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;@6515e106, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:04:36,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:04:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 143 states have (on average 1.2517482517482517) internal successors, (179), 144 states have internal predecessors, (179), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-11-23 08:04:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 08:04:36,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:36,790 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:04:36,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:36,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:36,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1196859876, now seen corresponding path program 1 times [2023-11-23 08:04:36,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:36,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796884959] [2023-11-23 08:04:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:36,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:04:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:04:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:04:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:04:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:04:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:04:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:04:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:04:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:04:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:04:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:04:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:04:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:04:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:04:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:04:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:04:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:04:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:04:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:04:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:04:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 08:04:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 08:04:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:04:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:04:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-11-23 08:04:37,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:37,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796884959] [2023-11-23 08:04:37,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796884959] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:04:37,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457596053] [2023-11-23 08:04:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:37,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:37,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:37,686 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 08:04:37,763 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 08:04:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:38,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 08:04:38,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-11-23 08:04:38,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:38,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457596053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:38,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:04:38,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 08:04:38,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103136704] [2023-11-23 08:04:38,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:38,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:04:38,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:38,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:04:38,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:04:38,356 INFO L87 Difference]: Start difference. First operand has 260 states, 143 states have (on average 1.2517482517482517) internal successors, (179), 144 states have internal predecessors, (179), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-23 08:04:38,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:38,774 INFO L93 Difference]: Finished difference Result 517 states and 800 transitions. [2023-11-23 08:04:38,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:04:38,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 139 [2023-11-23 08:04:38,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:38,786 INFO L225 Difference]: With dead ends: 517 [2023-11-23 08:04:38,786 INFO L226 Difference]: Without dead ends: 260 [2023-11-23 08:04:38,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:04:38,794 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 43 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:38,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1162 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:04:38,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-23 08:04:38,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-11-23 08:04:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 143 states have (on average 1.2377622377622377) internal successors, (177), 145 states have internal predecessors, (177), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2023-11-23 08:04:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 378 transitions. [2023-11-23 08:04:38,843 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 378 transitions. Word has length 139 [2023-11-23 08:04:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:38,844 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 378 transitions. [2023-11-23 08:04:38,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-23 08:04:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 378 transitions. [2023-11-23 08:04:38,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-23 08:04:38,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:38,848 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:38,864 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 08:04:39,064 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 08:04:39,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:39,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:39,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1834644650, now seen corresponding path program 1 times [2023-11-23 08:04:39,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:39,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473225235] [2023-11-23 08:04:39,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:39,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:39,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:39,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475056970] [2023-11-23 08:04:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:39,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:39,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:39,137 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 08:04:39,160 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 08:04:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:39,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:04:39,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-11-23 08:04:39,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:39,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:39,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473225235] [2023-11-23 08:04:39,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:39,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475056970] [2023-11-23 08:04:39,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475056970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:39,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:39,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:04:39,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666366754] [2023-11-23 08:04:39,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:39,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:04:39,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:39,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:04:39,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:04:39,624 INFO L87 Difference]: Start difference. First operand 260 states and 378 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 08:04:39,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:39,818 INFO L93 Difference]: Finished difference Result 501 states and 750 transitions. [2023-11-23 08:04:39,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:04:39,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 165 [2023-11-23 08:04:39,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:39,821 INFO L225 Difference]: With dead ends: 501 [2023-11-23 08:04:39,821 INFO L226 Difference]: Without dead ends: 265 [2023-11-23 08:04:39,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:04:39,823 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 10 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:39,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1019 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:04:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-23 08:04:39,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 262. [2023-11-23 08:04:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 145 states have (on average 1.2344827586206897) internal successors, (179), 147 states have internal predecessors, (179), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2023-11-23 08:04:39,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 380 transitions. [2023-11-23 08:04:39,839 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 380 transitions. Word has length 165 [2023-11-23 08:04:39,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:39,840 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 380 transitions. [2023-11-23 08:04:39,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 08:04:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 380 transitions. [2023-11-23 08:04:39,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-23 08:04:39,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:39,842 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:39,857 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 08:04:40,052 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 08:04:40,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:40,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:40,053 INFO L85 PathProgramCache]: Analyzing trace with hash -257636586, now seen corresponding path program 1 times [2023-11-23 08:04:40,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:40,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251189865] [2023-11-23 08:04:40,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:40,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:40,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:40,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471371453] [2023-11-23 08:04:40,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:40,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:40,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:40,203 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 08:04:40,225 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 08:04:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:04:40,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-23 08:04:40,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:40,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:40,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251189865] [2023-11-23 08:04:40,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:40,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471371453] [2023-11-23 08:04:40,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471371453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:40,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:40,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:04:40,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648873598] [2023-11-23 08:04:40,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:40,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:04:40,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:40,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:04:40,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:04:40,740 INFO L87 Difference]: Start difference. First operand 262 states and 380 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-23 08:04:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:41,188 INFO L93 Difference]: Finished difference Result 479 states and 693 transitions. [2023-11-23 08:04:41,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:04:41,188 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 165 [2023-11-23 08:04:41,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:41,191 INFO L225 Difference]: With dead ends: 479 [2023-11-23 08:04:41,191 INFO L226 Difference]: Without dead ends: 262 [2023-11-23 08:04:41,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:04:41,192 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 147 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:41,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1591 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:04:41,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-23 08:04:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2023-11-23 08:04:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 145 states have (on average 1.2344827586206897) internal successors, (179), 147 states have internal predecessors, (179), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (104), 92 states have call predecessors, (104), 92 states have call successors, (104) [2023-11-23 08:04:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 376 transitions. [2023-11-23 08:04:41,220 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 376 transitions. Word has length 165 [2023-11-23 08:04:41,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:41,221 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 376 transitions. [2023-11-23 08:04:41,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-23 08:04:41,222 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 376 transitions. [2023-11-23 08:04:41,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 08:04:41,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:41,225 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:04:41,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 08:04:41,444 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 08:04:41,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:41,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:41,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1984280274, now seen corresponding path program 2 times [2023-11-23 08:04:41,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:41,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264027913] [2023-11-23 08:04:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:41,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:41,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:41,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094852699] [2023-11-23 08:04:41,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:04:41,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:41,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:41,569 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 08:04:41,570 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 08:04:42,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:04:42,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:04:42,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:04:42,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-11-23 08:04:42,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:42,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:42,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264027913] [2023-11-23 08:04:42,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:42,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094852699] [2023-11-23 08:04:42,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094852699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:42,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:42,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:04:42,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288582830] [2023-11-23 08:04:42,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:42,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:04:42,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:42,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:04:42,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:04:42,079 INFO L87 Difference]: Start difference. First operand 262 states and 376 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 08:04:42,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:42,246 INFO L93 Difference]: Finished difference Result 460 states and 650 transitions. [2023-11-23 08:04:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:04:42,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 178 [2023-11-23 08:04:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:42,248 INFO L225 Difference]: With dead ends: 460 [2023-11-23 08:04:42,249 INFO L226 Difference]: Without dead ends: 266 [2023-11-23 08:04:42,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:04:42,250 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:42,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1362 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:04:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-23 08:04:42,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-11-23 08:04:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 148 states have (on average 1.2297297297297298) internal successors, (182), 150 states have internal predecessors, (182), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (106), 93 states have call predecessors, (106), 92 states have call successors, (106) [2023-11-23 08:04:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 381 transitions. [2023-11-23 08:04:42,276 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 381 transitions. Word has length 178 [2023-11-23 08:04:42,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:42,277 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 381 transitions. [2023-11-23 08:04:42,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 08:04:42,277 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 381 transitions. [2023-11-23 08:04:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-23 08:04:42,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:42,279 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:04:42,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:04:42,508 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 08:04:42,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:42,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:42,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1056714508, now seen corresponding path program 1 times [2023-11-23 08:04:42,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:42,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278738107] [2023-11-23 08:04:42,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:42,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:42,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:42,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568836885] [2023-11-23 08:04:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:42,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:42,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:42,568 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 08:04:42,600 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 08:04:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:43,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 2834 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 08:04:43,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-23 08:04:43,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:43,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:43,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278738107] [2023-11-23 08:04:43,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:43,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568836885] [2023-11-23 08:04:43,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568836885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:43,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:43,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:04:43,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728141026] [2023-11-23 08:04:43,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:43,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:04:43,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:43,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:04:43,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:04:43,250 INFO L87 Difference]: Start difference. First operand 266 states and 381 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-23 08:04:43,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:43,754 INFO L93 Difference]: Finished difference Result 481 states and 685 transitions. [2023-11-23 08:04:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:04:43,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 182 [2023-11-23 08:04:43,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:43,756 INFO L225 Difference]: With dead ends: 481 [2023-11-23 08:04:43,756 INFO L226 Difference]: Without dead ends: 266 [2023-11-23 08:04:43,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:04:43,758 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 183 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:43,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1801 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:04:43,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-23 08:04:43,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-11-23 08:04:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 148 states have (on average 1.2297297297297298) internal successors, (182), 150 states have internal predecessors, (182), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (100), 93 states have call predecessors, (100), 92 states have call successors, (100) [2023-11-23 08:04:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 375 transitions. [2023-11-23 08:04:43,768 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 375 transitions. Word has length 182 [2023-11-23 08:04:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:43,768 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 375 transitions. [2023-11-23 08:04:43,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-23 08:04:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 375 transitions. [2023-11-23 08:04:43,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-23 08:04:43,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:43,770 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:43,807 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 08:04:43,986 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 08:04:43,987 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:43,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1968417178, now seen corresponding path program 2 times [2023-11-23 08:04:43,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:43,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905886634] [2023-11-23 08:04:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:43,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:44,036 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:44,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480018209] [2023-11-23 08:04:44,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:04:44,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:44,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:44,053 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 08:04:44,096 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 08:04:44,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:04:44,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:04:44,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 08:04:44,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2023-11-23 08:04:44,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:44,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:44,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905886634] [2023-11-23 08:04:44,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:44,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480018209] [2023-11-23 08:04:44,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480018209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:44,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:44,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:04:44,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022433997] [2023-11-23 08:04:44,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:44,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:04:44,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:44,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:04:44,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:04:44,495 INFO L87 Difference]: Start difference. First operand 266 states and 375 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-23 08:04:44,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:44,788 INFO L93 Difference]: Finished difference Result 274 states and 383 transitions. [2023-11-23 08:04:44,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:04:44,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 195 [2023-11-23 08:04:44,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:44,790 INFO L225 Difference]: With dead ends: 274 [2023-11-23 08:04:44,790 INFO L226 Difference]: Without dead ends: 272 [2023-11-23 08:04:44,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:04:44,791 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 5 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:44,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1681 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:04:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-11-23 08:04:44,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2023-11-23 08:04:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 151 states have (on average 1.2251655629139073) internal successors, (185), 153 states have internal predecessors, (185), 94 states have call successors, (94), 23 states have call predecessors, (94), 25 states have return successors, (101), 94 states have call predecessors, (101), 93 states have call successors, (101) [2023-11-23 08:04:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 380 transitions. [2023-11-23 08:04:44,803 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 380 transitions. Word has length 195 [2023-11-23 08:04:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:44,803 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 380 transitions. [2023-11-23 08:04:44,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-23 08:04:44,804 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 380 transitions. [2023-11-23 08:04:44,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-23 08:04:44,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:44,806 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:44,825 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 08:04:45,020 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 08:04:45,021 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:45,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:45,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1200569964, now seen corresponding path program 1 times [2023-11-23 08:04:45,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:45,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8425817] [2023-11-23 08:04:45,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:45,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:45,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:45,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547937698] [2023-11-23 08:04:45,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:45,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:45,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:45,108 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 08:04:45,109 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 08:04:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:45,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 08:04:45,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:45,750 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-23 08:04:45,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:45,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:45,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8425817] [2023-11-23 08:04:45,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:45,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547937698] [2023-11-23 08:04:45,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547937698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:45,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:45,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 08:04:45,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938811283] [2023-11-23 08:04:45,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:45,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:04:45,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:45,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:04:45,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:04:45,752 INFO L87 Difference]: Start difference. First operand 271 states and 380 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2023-11-23 08:04:46,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:46,320 INFO L93 Difference]: Finished difference Result 483 states and 673 transitions. [2023-11-23 08:04:46,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:04:46,320 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) Word has length 201 [2023-11-23 08:04:46,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:46,322 INFO L225 Difference]: With dead ends: 483 [2023-11-23 08:04:46,322 INFO L226 Difference]: Without dead ends: 266 [2023-11-23 08:04:46,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:04:46,323 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 193 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:46,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 2076 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:04:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-23 08:04:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-11-23 08:04:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 148 states have (on average 1.2297297297297298) internal successors, (182), 150 states have internal predecessors, (182), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (96), 93 states have call predecessors, (96), 92 states have call successors, (96) [2023-11-23 08:04:46,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 371 transitions. [2023-11-23 08:04:46,332 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 371 transitions. Word has length 201 [2023-11-23 08:04:46,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:46,332 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 371 transitions. [2023-11-23 08:04:46,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2023-11-23 08:04:46,332 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 371 transitions. [2023-11-23 08:04:46,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-23 08:04:46,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:46,334 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:04:46,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 08:04:46,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:46,550 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:46,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:46,551 INFO L85 PathProgramCache]: Analyzing trace with hash -122332398, now seen corresponding path program 1 times [2023-11-23 08:04:46,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:46,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325939842] [2023-11-23 08:04:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:46,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:46,607 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:46,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384025378] [2023-11-23 08:04:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:46,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:46,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:46,609 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 08:04:46,610 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 08:04:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:47,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 3251 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 08:04:47,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-23 08:04:47,266 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:47,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:47,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325939842] [2023-11-23 08:04:47,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:47,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384025378] [2023-11-23 08:04:47,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384025378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:47,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:47,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 08:04:47,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115755185] [2023-11-23 08:04:47,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:47,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:04:47,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:47,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:04:47,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:04:47,269 INFO L87 Difference]: Start difference. First operand 266 states and 371 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-23 08:04:47,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:47,982 INFO L93 Difference]: Finished difference Result 609 states and 871 transitions. [2023-11-23 08:04:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:04:47,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 221 [2023-11-23 08:04:47,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:47,985 INFO L225 Difference]: With dead ends: 609 [2023-11-23 08:04:47,985 INFO L226 Difference]: Without dead ends: 391 [2023-11-23 08:04:47,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:04:47,986 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 132 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:47,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2778 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:04:47,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-11-23 08:04:47,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 367. [2023-11-23 08:04:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 202 states have (on average 1.2376237623762376) internal successors, (250), 204 states have internal predecessors, (250), 138 states have call successors, (138), 23 states have call predecessors, (138), 26 states have return successors, (145), 139 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-23 08:04:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 533 transitions. [2023-11-23 08:04:48,002 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 533 transitions. Word has length 221 [2023-11-23 08:04:48,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:48,002 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 533 transitions. [2023-11-23 08:04:48,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-23 08:04:48,002 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 533 transitions. [2023-11-23 08:04:48,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-23 08:04:48,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:48,004 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:04:48,040 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 08:04:48,220 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,SelfDestructingSolverStorable7 [2023-11-23 08:04:48,221 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:48,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:48,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2062914412, now seen corresponding path program 1 times [2023-11-23 08:04:48,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:48,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8161629] [2023-11-23 08:04:48,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:48,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:48,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:48,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996584860] [2023-11-23 08:04:48,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:48,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:48,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:48,297 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 08:04:48,314 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 08:04:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:48,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 3248 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 08:04:48,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-23 08:04:48,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:48,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:48,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8161629] [2023-11-23 08:04:48,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:48,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996584860] [2023-11-23 08:04:48,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996584860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:48,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:48,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:04:48,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761411648] [2023-11-23 08:04:48,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:48,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:04:48,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:48,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:04:48,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:04:48,895 INFO L87 Difference]: Start difference. First operand 367 states and 533 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-23 08:04:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:49,120 INFO L93 Difference]: Finished difference Result 619 states and 883 transitions. [2023-11-23 08:04:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:04:49,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 221 [2023-11-23 08:04:49,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:49,123 INFO L225 Difference]: With dead ends: 619 [2023-11-23 08:04:49,123 INFO L226 Difference]: Without dead ends: 391 [2023-11-23 08:04:49,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:04:49,124 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 23 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:49,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2044 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:04:49,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-11-23 08:04:49,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 367. [2023-11-23 08:04:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 202 states have (on average 1.2326732673267327) internal successors, (249), 204 states have internal predecessors, (249), 138 states have call successors, (138), 23 states have call predecessors, (138), 26 states have return successors, (145), 139 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-23 08:04:49,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 532 transitions. [2023-11-23 08:04:49,139 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 532 transitions. Word has length 221 [2023-11-23 08:04:49,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:49,139 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 532 transitions. [2023-11-23 08:04:49,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-23 08:04:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 532 transitions. [2023-11-23 08:04:49,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-23 08:04:49,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:49,141 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:04:49,158 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 08:04:49,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:49,356 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:49,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:49,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1115876526, now seen corresponding path program 1 times [2023-11-23 08:04:49,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:49,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658814529] [2023-11-23 08:04:49,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:49,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:49,410 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:49,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237827082] [2023-11-23 08:04:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:49,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:49,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:49,412 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 08:04:49,435 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 08:04:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:50,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 3245 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-23 08:04:50,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:50,044 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 08:04:50,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:04:50,301 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 25 treesize of output 13 [2023-11-23 08:04:50,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:04:50,306 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 25 treesize of output 13 [2023-11-23 08:04:54,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:04:54,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 08:04:54,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:04:54,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 08:04:54,830 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 08:04:54,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-23 08:05:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 205 proven. 12 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-11-23 08:05:10,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:05:25,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:05:25,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658814529] [2023-11-23 08:05:25,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:05:25,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237827082] [2023-11-23 08:05:25,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237827082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:05:25,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:05:25,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-11-23 08:05:25,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346420785] [2023-11-23 08:05:25,062 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 08:05:25,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 08:05:25,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:05:25,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 08:05:25,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=810, Unknown=14, NotChecked=0, Total=930 [2023-11-23 08:05:25,063 INFO L87 Difference]: Start difference. First operand 367 states and 532 transitions. Second operand has 20 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 7 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2023-11-23 08:05:29,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:31,575 WARN L539 Checker$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 08:05:34,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:36,343 WARN L539 Checker$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 08:05:40,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:46,030 WARN L539 Checker$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 08:05:48,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:50,794 WARN L539 Checker$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 08:05:53,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:57,647 WARN L539 Checker$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 08:06:00,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:04,196 WARN L539 Checker$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 08:06:06,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:11,216 WARN L539 Checker$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 08:06:14,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:16,942 WARN L539 Checker$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 08:06:19,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:22,256 WARN L539 Checker$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 08:06:24,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:28,487 WARN L539 Checker$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 08:06:30,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:34,028 WARN L539 Checker$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 08:06:36,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:38,757 WARN L539 Checker$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 08:06:42,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:44,789 WARN L539 Checker$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 08:06:46,831 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 08:06:48,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:06:48,796 INFO L93 Difference]: Finished difference Result 1115 states and 1774 transitions. [2023-11-23 08:06:48,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-23 08:06:48,797 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 7 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 221 [2023-11-23 08:06:48,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:06:48,801 INFO L225 Difference]: With dead ends: 1115 [2023-11-23 08:06:48,801 INFO L226 Difference]: Without dead ends: 731 [2023-11-23 08:06:48,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 367 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=324, Invalid=2212, Unknown=14, NotChecked=0, Total=2550 [2023-11-23 08:06:48,803 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 470 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 4026 mSolverCounterSat, 456 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 4509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 4026 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:06:48,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1946 Invalid, 4509 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [456 Valid, 4026 Invalid, 27 Unknown, 0 Unchecked, 79.7s Time] [2023-11-23 08:06:48,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-11-23 08:06:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 373. [2023-11-23 08:06:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 206 states have (on average 1.2233009708737863) internal successors, (252), 208 states have internal predecessors, (252), 137 states have call successors, (137), 26 states have call predecessors, (137), 29 states have return successors, (144), 138 states have call predecessors, (144), 136 states have call successors, (144) [2023-11-23 08:06:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2023-11-23 08:06:48,836 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 221 [2023-11-23 08:06:48,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:06:48,836 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2023-11-23 08:06:48,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 7 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2023-11-23 08:06:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2023-11-23 08:06:48,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-23 08:06:48,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:06:48,838 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:06:48,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 08:06:49,052 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,SelfDestructingSolverStorable9 [2023-11-23 08:06:49,053 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:06:49,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:06:49,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1341689991, now seen corresponding path program 1 times [2023-11-23 08:06:49,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:06:49,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037257317] [2023-11-23 08:06:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:49,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:06:49,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:06:49,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528921242] [2023-11-23 08:06:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:49,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:06:49,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:06:49,118 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 08:06:49,121 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 08:06:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:49,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 3282 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-23 08:06:49,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:06:49,728 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 08:06:50,082 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 08:06:50,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:06:50,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 1 [2023-11-23 08:06:51,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 27 [2023-11-23 08:06:51,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:06:51,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 9 [2023-11-23 08:07:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 159 proven. 4 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-11-23 08:07:01,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:07:02,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:07:02,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037257317] [2023-11-23 08:07:02,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:07:02,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528921242] [2023-11-23 08:07:02,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528921242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:07:02,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:07:02,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-11-23 08:07:02,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146266801] [2023-11-23 08:07:02,186 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 08:07:02,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 08:07:02,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:07:02,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 08:07:02,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=440, Unknown=2, NotChecked=0, Total=506 [2023-11-23 08:07:02,187 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 22 states, 19 states have (on average 4.0) internal successors, (76), 18 states have internal predecessors, (76), 8 states have call successors, (32), 7 states have call predecessors, (32), 8 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2023-11-23 08:07:07,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:10,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:24,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:26,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:29,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:33,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:37,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:39,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:42,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:46,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:49,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:52,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:55,124 WARN L539 Checker$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 08:07:57,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:00,729 WARN L539 Checker$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 08:08:02,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:03,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:06,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:08,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:11,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:29,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:31,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:41,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:44,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:46,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:51,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:54,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:58,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:00,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:03,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:08,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Killed by 15