./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_dynamic_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_priority_queue_init_dynamic_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 1d2e69f4642a563490a54ab98df347e9503153274554b670c58dee99087098c7 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:58:00,186 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:58:00,247 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:58:00,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:58:00,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:58:00,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:58:00,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:58:00,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:58:00,283 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:58:00,287 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:58:00,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:58:00,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:58:00,289 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:58:00,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:58:00,290 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:58:00,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:58:00,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:58:00,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:58:00,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:58:00,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:58:00,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:58:00,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:58:00,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:58:00,292 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:58:00,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:58:00,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:58:00,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:58:00,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:58:00,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:58:00,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:58:00,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:58:00,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:58:00,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:58:00,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:58:00,295 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:58:00,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:58:00,295 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:58:00,295 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:58:00,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:58:00,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2e69f4642a563490a54ab98df347e9503153274554b670c58dee99087098c7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:58:00,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:58:00,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:58:00,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:58:00,532 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:58:00,532 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:58:00,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i [2023-11-23 08:58:01,568 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:58:01,870 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:58:01,871 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i [2023-11-23 08:58:01,901 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f5a46440/2d643f413b944f3bad93e71a7fced266/FLAGfbfebddf4 [2023-11-23 08:58:01,921 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f5a46440/2d643f413b944f3bad93e71a7fced266 [2023-11-23 08:58:01,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:58:01,926 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:58:01,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:58:01,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:58:01,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:58:01,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:58:01" (1/1) ... [2023-11-23 08:58:01,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e88da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:01, skipping insertion in model container [2023-11-23 08:58:01,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:58:01" (1/1) ... [2023-11-23 08:58:02,026 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:58:02,199 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_priority_queue_init_dynamic_harness_negated.i[4505,4518] [2023-11-23 08:58:02,207 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_priority_queue_init_dynamic_harness_negated.i[4565,4578] [2023-11-23 08:58:02,811 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,811 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,811 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,812 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,813 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,825 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,826 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,827 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,827 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,015 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:58:03,016 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:58:03,017 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:58:03,019 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:58:03,021 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:58:03,022 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:58:03,022 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:58:03,023 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:58:03,023 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:58:03,025 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:58:03,114 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,115 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:58:03,175 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:58:03,187 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_priority_queue_init_dynamic_harness_negated.i[4505,4518] [2023-11-23 08:58:03,188 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_priority_queue_init_dynamic_harness_negated.i[4565,4578] [2023-11-23 08:58:03,219 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,220 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,220 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,221 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,221 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,226 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,227 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,227 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,228 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,264 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:58:03,265 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:58:03,265 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:58:03,266 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:58:03,266 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:58:03,267 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:58:03,267 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:58:03,267 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:58:03,268 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:58:03,268 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:58:03,298 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,298 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:03,302 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7671-7682] [2023-11-23 08:58:03,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:58:03,516 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,516 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,516 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,516 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,516 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,516 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,516 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,517 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,517 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,517 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,517 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,518 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,518 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,518 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,518 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:03,524 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:58:03,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:03 WrapperNode [2023-11-23 08:58:03,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:58:03,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:58:03,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:58:03,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:58:03,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:03" (1/1) ... [2023-11-23 08:58:03,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:03" (1/1) ... [2023-11-23 08:58:03,687 INFO L138 Inliner]: procedures = 688, calls = 1515, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 734 [2023-11-23 08:58:03,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:58:03,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:58:03,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:58:03,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:58:03,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:03" (1/1) ... [2023-11-23 08:58:03,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:03" (1/1) ... [2023-11-23 08:58:03,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:03" (1/1) ... [2023-11-23 08:58:03,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:03" (1/1) ... [2023-11-23 08:58:03,748 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:03" (1/1) ... [2023-11-23 08:58:03,751 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:03" (1/1) ... [2023-11-23 08:58:03,763 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:03" (1/1) ... [2023-11-23 08:58:03,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:03" (1/1) ... [2023-11-23 08:58:03,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:58:03,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:58:03,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:58:03,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:58:03,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:03" (1/1) ... [2023-11-23 08:58:03,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:58:03,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:03,808 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 08:58:03,824 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 08:58:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 08:58:03,850 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 08:58:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:58:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 08:58:03,850 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 08:58:03,851 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:58:03,851 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:58:03,851 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 08:58:03,852 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 08:58:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:58:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 08:58:03,852 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 08:58:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:58:03,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:58:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:58:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:58:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:58:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:58:03,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:58:03,854 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:58:03,854 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:58:03,854 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 08:58:03,854 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 08:58:03,854 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 08:58:03,854 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 08:58:03,854 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 08:58:03,854 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 08:58:03,854 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:58:03,854 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:58:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:58:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:58:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:58:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:58:03,855 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:58:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 08:58:03,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 08:58:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:58:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-23 08:58:03,856 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-23 08:58:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 08:58:03,856 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 08:58:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:58:04,129 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:58:04,145 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:58:04,934 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:58:05,008 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:58:05,008 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-23 08:58:05,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:58:05 BoogieIcfgContainer [2023-11-23 08:58:05,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:58:05,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:58:05,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:58:05,013 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:58:05,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:58:01" (1/3) ... [2023-11-23 08:58:05,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46abe40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:58:05, skipping insertion in model container [2023-11-23 08:58:05,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:03" (2/3) ... [2023-11-23 08:58:05,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46abe40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:58:05, skipping insertion in model container [2023-11-23 08:58:05,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:58:05" (3/3) ... [2023-11-23 08:58:05,017 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness_negated.i [2023-11-23 08:58:05,030 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:58:05,030 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:58:05,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:58:05,080 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;@6e8310cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:58:05,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:58:05,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 111 states have (on average 1.3063063063063063) internal successors, (145), 111 states have internal predecessors, (145), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-23 08:58:05,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 08:58:05,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:05,094 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-11-23 08:58:05,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:05,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:05,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1102596533, now seen corresponding path program 1 times [2023-11-23 08:58:05,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:05,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256443320] [2023-11-23 08:58:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:05,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:05,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256443320] [2023-11-23 08:58:05,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 08:58:05,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799714691] [2023-11-23 08:58:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:05,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:05,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:05,473 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 08:58:05,506 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 08:58:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:05,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 2192 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 08:58:05,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-23 08:58:05,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:58:05,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799714691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:58:05,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:58:05,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 08:58:05,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41420857] [2023-11-23 08:58:05,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:05,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 08:58:05,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:05,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 08:58:05,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 08:58:05,977 INFO L87 Difference]: Start difference. First operand has 179 states, 111 states have (on average 1.3063063063063063) internal successors, (145), 111 states have internal predecessors, (145), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:58:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:06,113 INFO L93 Difference]: Finished difference Result 354 states and 536 transitions. [2023-11-23 08:58:06,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 08:58:06,118 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2023-11-23 08:58:06,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:06,129 INFO L225 Difference]: With dead ends: 354 [2023-11-23 08:58:06,129 INFO L226 Difference]: Without dead ends: 175 [2023-11-23 08:58:06,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 08:58:06,138 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:06,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:58:06,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-23 08:58:06,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-11-23 08:58:06,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 106 states have (on average 1.2641509433962264) internal successors, (134), 108 states have internal predecessors, (134), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 08:58:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 238 transitions. [2023-11-23 08:58:06,190 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 238 transitions. Word has length 92 [2023-11-23 08:58:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:06,190 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 238 transitions. [2023-11-23 08:58:06,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:58:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 238 transitions. [2023-11-23 08:58:06,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 08:58:06,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:06,197 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:06,217 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 08:58:06,412 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 08:58:06,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:06,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1442738450, now seen corresponding path program 1 times [2023-11-23 08:58:06,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:06,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525587642] [2023-11-23 08:58:06,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:06,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:06,600 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:06,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145183945] [2023-11-23 08:58:06,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:06,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:06,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:06,602 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 08:58:06,614 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 08:58:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:07,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 2342 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 08:58:07,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 08:58:07,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:58:07,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:07,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525587642] [2023-11-23 08:58:07,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:07,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145183945] [2023-11-23 08:58:07,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145183945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:58:07,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:58:07,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:58:07,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000233743] [2023-11-23 08:58:07,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:07,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:58:07,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:07,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:58:07,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:58:07,244 INFO L87 Difference]: Start difference. First operand 175 states and 238 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 08:58:07,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:07,498 INFO L93 Difference]: Finished difference Result 338 states and 455 transitions. [2023-11-23 08:58:07,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:58:07,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2023-11-23 08:58:07,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:07,504 INFO L225 Difference]: With dead ends: 338 [2023-11-23 08:58:07,504 INFO L226 Difference]: Without dead ends: 175 [2023-11-23 08:58:07,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:58:07,505 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 9 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:07,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1072 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:58:07,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-23 08:58:07,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-11-23 08:58:07,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 108 states have internal predecessors, (133), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 08:58:07,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 237 transitions. [2023-11-23 08:58:07,543 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 237 transitions. Word has length 122 [2023-11-23 08:58:07,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:07,544 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 237 transitions. [2023-11-23 08:58:07,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 08:58:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 237 transitions. [2023-11-23 08:58:07,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 08:58:07,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:07,548 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:07,566 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 08:58:07,760 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 08:58:07,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:07,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:07,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1758133502, now seen corresponding path program 1 times [2023-11-23 08:58:07,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:07,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144401345] [2023-11-23 08:58:07,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:07,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:07,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:07,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152910820] [2023-11-23 08:58:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:07,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:07,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:07,908 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 08:58:07,980 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 08:58:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:08,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 2358 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 08:58:08,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-11-23 08:58:08,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:58:08,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:08,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144401345] [2023-11-23 08:58:08,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:08,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152910820] [2023-11-23 08:58:08,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152910820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:58:08,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:58:08,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:58:08,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290374554] [2023-11-23 08:58:08,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:08,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:58:08,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:08,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:58:08,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:58:08,690 INFO L87 Difference]: Start difference. First operand 175 states and 237 transitions. Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 08:58:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:08,974 INFO L93 Difference]: Finished difference Result 335 states and 453 transitions. [2023-11-23 08:58:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:58:08,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 126 [2023-11-23 08:58:08,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:08,991 INFO L225 Difference]: With dead ends: 335 [2023-11-23 08:58:08,993 INFO L226 Difference]: Without dead ends: 176 [2023-11-23 08:58:08,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:58:08,994 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 6 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:08,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 644 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:58:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-23 08:58:09,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-11-23 08:58:09,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 107 states have (on average 1.2523364485981308) internal successors, (134), 109 states have internal predecessors, (134), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 08:58:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2023-11-23 08:58:09,006 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 126 [2023-11-23 08:58:09,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:09,006 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2023-11-23 08:58:09,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 08:58:09,009 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2023-11-23 08:58:09,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 08:58:09,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:09,010 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:09,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:09,225 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 08:58:09,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:09,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:09,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1173444684, now seen corresponding path program 1 times [2023-11-23 08:58:09,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:09,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056122681] [2023-11-23 08:58:09,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:09,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:09,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:09,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203178317] [2023-11-23 08:58:09,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:09,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:09,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:09,328 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 08:58:09,416 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 08:58:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:09,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 2396 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 08:58:09,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:10,058 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 149 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-23 08:58:10,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-23 08:58:10,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:10,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056122681] [2023-11-23 08:58:10,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:10,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203178317] [2023-11-23 08:58:10,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203178317] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:10,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:10,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-23 08:58:10,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268994397] [2023-11-23 08:58:10,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:10,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 08:58:10,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:10,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 08:58:10,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:58:10,269 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 13 states have internal predecessors, (67), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:10,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:10,683 INFO L93 Difference]: Finished difference Result 342 states and 458 transitions. [2023-11-23 08:58:10,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:58:10,683 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 13 states have internal predecessors, (67), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 128 [2023-11-23 08:58:10,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:10,685 INFO L225 Difference]: With dead ends: 342 [2023-11-23 08:58:10,685 INFO L226 Difference]: Without dead ends: 177 [2023-11-23 08:58:10,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:58:10,686 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 16 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:10,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1070 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:58:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-23 08:58:10,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-11-23 08:58:10,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 108 states have (on average 1.25) internal successors, (135), 110 states have internal predecessors, (135), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 08:58:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 239 transitions. [2023-11-23 08:58:10,692 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 239 transitions. Word has length 128 [2023-11-23 08:58:10,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:10,692 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 239 transitions. [2023-11-23 08:58:10,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 13 states have internal predecessors, (67), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:10,693 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 239 transitions. [2023-11-23 08:58:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-23 08:58:10,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:10,694 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:10,712 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 08:58:10,900 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 08:58:10,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:10,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:10,901 INFO L85 PathProgramCache]: Analyzing trace with hash 197600642, now seen corresponding path program 2 times [2023-11-23 08:58:10,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:10,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940683522] [2023-11-23 08:58:10,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:10,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:10,945 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:10,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364182065] [2023-11-23 08:58:10,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:58:10,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:10,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:10,947 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 08:58:10,998 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 08:58:11,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:58:11,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:12,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 08:58:12,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-11-23 08:58:12,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-23 08:58:12,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:12,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940683522] [2023-11-23 08:58:12,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:12,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364182065] [2023-11-23 08:58:12,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364182065] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:12,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:12,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2023-11-23 08:58:12,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760860516] [2023-11-23 08:58:12,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:12,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 08:58:12,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:12,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 08:58:12,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:58:12,413 INFO L87 Difference]: Start difference. First operand 177 states and 239 transitions. Second operand has 17 states, 15 states have (on average 4.066666666666666) internal successors, (61), 17 states have internal predecessors, (61), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2023-11-23 08:58:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:13,193 INFO L93 Difference]: Finished difference Result 344 states and 460 transitions. [2023-11-23 08:58:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:58:13,194 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.066666666666666) internal successors, (61), 17 states have internal predecessors, (61), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) Word has length 130 [2023-11-23 08:58:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:13,195 INFO L225 Difference]: With dead ends: 344 [2023-11-23 08:58:13,195 INFO L226 Difference]: Without dead ends: 178 [2023-11-23 08:58:13,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:58:13,196 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 17 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:13,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1928 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:58:13,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-23 08:58:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-11-23 08:58:13,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 111 states have internal predecessors, (136), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 08:58:13,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 240 transitions. [2023-11-23 08:58:13,203 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 240 transitions. Word has length 130 [2023-11-23 08:58:13,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:13,204 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 240 transitions. [2023-11-23 08:58:13,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.066666666666666) internal successors, (61), 17 states have internal predecessors, (61), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2023-11-23 08:58:13,204 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 240 transitions. [2023-11-23 08:58:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 08:58:13,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:13,205 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:13,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-23 08:58:13,414 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 08:58:13,414 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:13,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:13,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2042177612, now seen corresponding path program 3 times [2023-11-23 08:58:13,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:13,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339125177] [2023-11-23 08:58:13,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:13,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:13,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:13,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192275711] [2023-11-23 08:58:13,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:58:13,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:13,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:13,460 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 08:58:13,461 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 08:58:14,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 08:58:14,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:14,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 2055 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 08:58:14,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-23 08:58:14,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2023-11-23 08:58:14,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:14,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339125177] [2023-11-23 08:58:14,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:14,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192275711] [2023-11-23 08:58:14,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192275711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:14,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:14,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-11-23 08:58:14,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274637975] [2023-11-23 08:58:14,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:14,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 08:58:14,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:14,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 08:58:14,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:58:14,521 INFO L87 Difference]: Start difference. First operand 178 states and 240 transitions. Second operand has 17 states, 15 states have (on average 4.0) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:58:15,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:15,141 INFO L93 Difference]: Finished difference Result 346 states and 462 transitions. [2023-11-23 08:58:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 08:58:15,144 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.0) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 132 [2023-11-23 08:58:15,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:15,145 INFO L225 Difference]: With dead ends: 346 [2023-11-23 08:58:15,145 INFO L226 Difference]: Without dead ends: 179 [2023-11-23 08:58:15,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:58:15,146 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 12 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:15,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1923 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:58:15,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-23 08:58:15,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-11-23 08:58:15,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 112 states have internal predecessors, (137), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 08:58:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 241 transitions. [2023-11-23 08:58:15,153 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 241 transitions. Word has length 132 [2023-11-23 08:58:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:15,153 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 241 transitions. [2023-11-23 08:58:15,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.0) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:58:15,153 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 241 transitions. [2023-11-23 08:58:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 08:58:15,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:15,154 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:15,172 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 08:58:15,369 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 08:58:15,369 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:15,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:15,370 INFO L85 PathProgramCache]: Analyzing trace with hash 942692354, now seen corresponding path program 4 times [2023-11-23 08:58:15,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:15,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395413217] [2023-11-23 08:58:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:15,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:15,432 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:15,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760025341] [2023-11-23 08:58:15,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 08:58:15,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:15,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:15,434 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 08:58:15,452 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 08:58:16,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 08:58:16,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:16,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-23 08:58:16,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 170 proven. 10 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-23 08:58:16,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2023-11-23 08:58:16,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395413217] [2023-11-23 08:58:16,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760025341] [2023-11-23 08:58:16,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760025341] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:16,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:16,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-11-23 08:58:16,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442586899] [2023-11-23 08:58:16,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:16,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 08:58:16,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:16,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 08:58:16,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:58:16,485 INFO L87 Difference]: Start difference. First operand 179 states and 241 transitions. Second operand has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 19 states have internal predecessors, (73), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:17,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:17,673 INFO L93 Difference]: Finished difference Result 348 states and 464 transitions. [2023-11-23 08:58:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:58:17,676 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 19 states have internal predecessors, (73), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 134 [2023-11-23 08:58:17,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:17,679 INFO L225 Difference]: With dead ends: 348 [2023-11-23 08:58:17,680 INFO L226 Difference]: Without dead ends: 180 [2023-11-23 08:58:17,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:58:17,682 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 11 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:17,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2989 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 08:58:17,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-23 08:58:17,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-11-23 08:58:17,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 111 states have (on average 1.2432432432432432) internal successors, (138), 113 states have internal predecessors, (138), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 08:58:17,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 242 transitions. [2023-11-23 08:58:17,695 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 242 transitions. Word has length 134 [2023-11-23 08:58:17,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:17,696 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 242 transitions. [2023-11-23 08:58:17,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 19 states have internal predecessors, (73), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:17,696 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 242 transitions. [2023-11-23 08:58:17,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 08:58:17,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:17,697 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:17,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:17,914 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 08:58:17,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:17,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:17,915 INFO L85 PathProgramCache]: Analyzing trace with hash -805918644, now seen corresponding path program 5 times [2023-11-23 08:58:17,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:17,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613491608] [2023-11-23 08:58:17,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:17,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:17,968 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:17,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333549946] [2023-11-23 08:58:17,969 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 08:58:17,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:17,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:17,970 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 08:58:17,992 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 08:58:18,670 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-11-23 08:58:18,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:18,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 08:58:18,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 181 proven. 15 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-23 08:58:18,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-23 08:58:19,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613491608] [2023-11-23 08:58:19,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333549946] [2023-11-23 08:58:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333549946] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:19,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:19,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-11-23 08:58:19,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718790801] [2023-11-23 08:58:19,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:19,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-23 08:58:19,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-23 08:58:19,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-23 08:58:19,118 INFO L87 Difference]: Start difference. First operand 180 states and 242 transitions. Second operand has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 21 states have internal predecessors, (75), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:20,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:20,349 INFO L93 Difference]: Finished difference Result 350 states and 466 transitions. [2023-11-23 08:58:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:58:20,352 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 21 states have internal predecessors, (75), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 136 [2023-11-23 08:58:20,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:20,389 INFO L225 Difference]: With dead ends: 350 [2023-11-23 08:58:20,389 INFO L226 Difference]: Without dead ends: 181 [2023-11-23 08:58:20,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-11-23 08:58:20,390 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 16 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3416 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:20,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3416 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 08:58:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-23 08:58:20,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-11-23 08:58:20,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 112 states have (on average 1.2410714285714286) internal successors, (139), 114 states have internal predecessors, (139), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 08:58:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 243 transitions. [2023-11-23 08:58:20,398 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 243 transitions. Word has length 136 [2023-11-23 08:58:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:20,398 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 243 transitions. [2023-11-23 08:58:20,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 21 states have internal predecessors, (75), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:20,398 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 243 transitions. [2023-11-23 08:58:20,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-23 08:58:20,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:20,399 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:20,414 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 08:58:20,600 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 08:58:20,600 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:20,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:20,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1083480706, now seen corresponding path program 6 times [2023-11-23 08:58:20,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:20,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426993745] [2023-11-23 08:58:20,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:20,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:20,655 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:20,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748601685] [2023-11-23 08:58:20,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-23 08:58:20,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:20,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:20,668 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 08:58:20,684 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 08:58:22,671 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-11-23 08:58:22,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:22,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 2210 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 08:58:22,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 64 proven. 21 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-11-23 08:58:22,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2023-11-23 08:58:23,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426993745] [2023-11-23 08:58:23,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748601685] [2023-11-23 08:58:23,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748601685] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:23,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:23,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2023-11-23 08:58:23,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730882792] [2023-11-23 08:58:23,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:23,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 08:58:23,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:23,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 08:58:23,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2023-11-23 08:58:23,160 INFO L87 Difference]: Start difference. First operand 181 states and 243 transitions. Second operand has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 23 states have internal predecessors, (66), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:58:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:24,501 INFO L93 Difference]: Finished difference Result 352 states and 468 transitions. [2023-11-23 08:58:24,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:58:24,502 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 23 states have internal predecessors, (66), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 138 [2023-11-23 08:58:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:24,503 INFO L225 Difference]: With dead ends: 352 [2023-11-23 08:58:24,503 INFO L226 Difference]: Without dead ends: 182 [2023-11-23 08:58:24,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-11-23 08:58:24,506 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 11 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3416 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:24,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3416 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 08:58:24,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-23 08:58:24,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-11-23 08:58:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 113 states have (on average 1.238938053097345) internal successors, (140), 115 states have internal predecessors, (140), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 08:58:24,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 244 transitions. [2023-11-23 08:58:24,515 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 244 transitions. Word has length 138 [2023-11-23 08:58:24,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:24,516 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 244 transitions. [2023-11-23 08:58:24,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 23 states have internal predecessors, (66), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:58:24,516 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 244 transitions. [2023-11-23 08:58:24,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-23 08:58:24,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:24,517 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:24,538 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 08:58:24,732 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 08:58:24,732 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:24,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:24,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1973803084, now seen corresponding path program 7 times [2023-11-23 08:58:24,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:24,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665737214] [2023-11-23 08:58:24,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:24,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:24,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:24,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816506401] [2023-11-23 08:58:24,805 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-23 08:58:24,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:24,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:24,806 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 08:58:24,827 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 08:58:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:25,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 2624 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-23 08:58:25,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 209 proven. 28 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-11-23 08:58:25,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-23 08:58:26,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:26,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665737214] [2023-11-23 08:58:26,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:26,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816506401] [2023-11-23 08:58:26,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816506401] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:26,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:26,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-11-23 08:58:26,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746267868] [2023-11-23 08:58:26,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:26,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-23 08:58:26,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:26,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-23 08:58:26,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2023-11-23 08:58:26,161 INFO L87 Difference]: Start difference. First operand 182 states and 244 transitions. Second operand has 25 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 25 states have internal predecessors, (79), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:27,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:27,613 INFO L93 Difference]: Finished difference Result 354 states and 470 transitions. [2023-11-23 08:58:27,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 08:58:27,614 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 25 states have internal predecessors, (79), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 140 [2023-11-23 08:58:27,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:27,615 INFO L225 Difference]: With dead ends: 354 [2023-11-23 08:58:27,615 INFO L226 Difference]: Without dead ends: 183 [2023-11-23 08:58:27,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2023-11-23 08:58:27,616 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 16 mSDsluCounter, 3625 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3842 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:27,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3842 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 08:58:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-23 08:58:27,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-11-23 08:58:27,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 114 states have (on average 1.236842105263158) internal successors, (141), 116 states have internal predecessors, (141), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 08:58:27,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 245 transitions. [2023-11-23 08:58:27,621 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 245 transitions. Word has length 140 [2023-11-23 08:58:27,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:27,621 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 245 transitions. [2023-11-23 08:58:27,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 25 states have internal predecessors, (79), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:27,622 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 245 transitions. [2023-11-23 08:58:27,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 08:58:27,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:27,623 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:27,642 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 08:58:27,836 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 08:58:27,836 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:27,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:27,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1139282686, now seen corresponding path program 8 times [2023-11-23 08:58:27,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:27,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435458212] [2023-11-23 08:58:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:27,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:27,892 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:27,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382124526] [2023-11-23 08:58:27,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:58:27,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:27,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:27,893 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 08:58:27,928 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 08:58:29,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:58:29,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:29,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 08:58:29,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 96 proven. 36 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-11-23 08:58:29,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 89 proven. 36 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-11-23 08:58:29,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:29,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435458212] [2023-11-23 08:58:29,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:29,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382124526] [2023-11-23 08:58:29,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382124526] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:29,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:29,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2023-11-23 08:58:29,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690608969] [2023-11-23 08:58:29,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:29,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 08:58:29,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:29,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 08:58:29,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2023-11-23 08:58:29,715 INFO L87 Difference]: Start difference. First operand 183 states and 245 transitions. Second operand has 27 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:58:31,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:31,154 INFO L93 Difference]: Finished difference Result 356 states and 472 transitions. [2023-11-23 08:58:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 08:58:31,159 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 142 [2023-11-23 08:58:31,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:31,160 INFO L225 Difference]: With dead ends: 356 [2023-11-23 08:58:31,160 INFO L226 Difference]: Without dead ends: 184 [2023-11-23 08:58:31,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2023-11-23 08:58:31,161 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 15 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:31,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3202 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 08:58:31,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-23 08:58:31,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-11-23 08:58:31,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 117 states have internal predecessors, (142), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 08:58:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 246 transitions. [2023-11-23 08:58:31,186 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 246 transitions. Word has length 142 [2023-11-23 08:58:31,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:31,187 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 246 transitions. [2023-11-23 08:58:31,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:58:31,187 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 246 transitions. [2023-11-23 08:58:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-23 08:58:31,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:31,193 INFO L195 NwaCegarLoop]: trace histogram [18, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:31,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:31,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 08:58:31,415 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:31,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:31,416 INFO L85 PathProgramCache]: Analyzing trace with hash 885176396, now seen corresponding path program 9 times [2023-11-23 08:58:31,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:31,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182754217] [2023-11-23 08:58:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:31,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:31,581 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:31,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671055520] [2023-11-23 08:58:31,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:58:31,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:31,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:31,602 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:58:31,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 09:02:20,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-23 09:02:20,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 09:02:20,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 09:02:20,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 115 proven. 45 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-11-23 09:02:20,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:02:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 108 proven. 45 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-23 09:02:21,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:21,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182754217] [2023-11-23 09:02:21,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:21,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671055520] [2023-11-23 09:02:21,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671055520] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:02:21,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:02:21,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2023-11-23 09:02:21,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789616450] [2023-11-23 09:02:21,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 09:02:21,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-23 09:02:21,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:21,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-23 09:02:21,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-11-23 09:02:21,248 INFO L87 Difference]: Start difference. First operand 184 states and 246 transitions. Second operand has 29 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 29 states have internal predecessors, (72), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 09:02:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:22,804 INFO L93 Difference]: Finished difference Result 358 states and 474 transitions. [2023-11-23 09:02:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 09:02:22,804 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 29 states have internal predecessors, (72), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 144 [2023-11-23 09:02:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:22,806 INFO L225 Difference]: With dead ends: 358 [2023-11-23 09:02:22,806 INFO L226 Difference]: Without dead ends: 185 [2023-11-23 09:02:22,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=968, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 09:02:22,807 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 11 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3415 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:22,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3415 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 09:02:22,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-23 09:02:22,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-11-23 09:02:22,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 116 states have (on average 1.2327586206896552) internal successors, (143), 118 states have internal predecessors, (143), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 09:02:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 247 transitions. [2023-11-23 09:02:22,812 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 247 transitions. Word has length 144 [2023-11-23 09:02:22,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:22,812 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 247 transitions. [2023-11-23 09:02:22,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 29 states have internal predecessors, (72), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 09:02:22,812 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 247 transitions. [2023-11-23 09:02:22,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-23 09:02:22,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:22,813 INFO L195 NwaCegarLoop]: trace histogram [20, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:02:22,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 09:02:23,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 09:02:23,028 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:23,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash -186757246, now seen corresponding path program 10 times [2023-11-23 09:02:23,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:23,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726011518] [2023-11-23 09:02:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:23,081 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:23,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742428901] [2023-11-23 09:02:23,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 09:02:23,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:23,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:23,083 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:02:23,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 09:02:23,870 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 09:02:23,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 09:02:23,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-23 09:02:23,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 266 proven. 55 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 09:02:24,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:02:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-11-23 09:02:24,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:24,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726011518] [2023-11-23 09:02:24,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:24,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742428901] [2023-11-23 09:02:24,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742428901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:02:24,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:02:24,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2023-11-23 09:02:24,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163799235] [2023-11-23 09:02:24,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 09:02:24,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 09:02:24,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:24,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 09:02:24,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2023-11-23 09:02:24,984 INFO L87 Difference]: Start difference. First operand 185 states and 247 transitions. Second operand has 31 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 31 states have internal predecessors, (85), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 09:02:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:26,587 INFO L93 Difference]: Finished difference Result 360 states and 476 transitions. [2023-11-23 09:02:26,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 09:02:26,588 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 31 states have internal predecessors, (85), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 146 [2023-11-23 09:02:26,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:26,589 INFO L225 Difference]: With dead ends: 360 [2023-11-23 09:02:26,589 INFO L226 Difference]: Without dead ends: 186 [2023-11-23 09:02:26,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 09:02:26,590 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 11 mSDsluCounter, 3624 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3841 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:26,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3841 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 09:02:26,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-23 09:02:26,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-11-23 09:02:26,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 117 states have (on average 1.2307692307692308) internal successors, (144), 119 states have internal predecessors, (144), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 09:02:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 248 transitions. [2023-11-23 09:02:26,595 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 248 transitions. Word has length 146 [2023-11-23 09:02:26,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:26,595 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 248 transitions. [2023-11-23 09:02:26,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 31 states have internal predecessors, (85), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 09:02:26,595 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 248 transitions. [2023-11-23 09:02:26,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-23 09:02:26,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:26,597 INFO L195 NwaCegarLoop]: trace histogram [22, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:02:26,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 09:02:26,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 09:02:26,810 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:26,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:26,811 INFO L85 PathProgramCache]: Analyzing trace with hash 877217868, now seen corresponding path program 11 times [2023-11-23 09:02:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:26,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848803493] [2023-11-23 09:02:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:26,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:26,862 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:26,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735756914] [2023-11-23 09:02:26,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 09:02:26,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:26,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:26,864 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:02:26,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process Killed by 15