./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_size_harness.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_size_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 09:04:04,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 09:04:04,792 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 09:04:04,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 09:04:04,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 09:04:04,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 09:04:04,821 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 09:04:04,821 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 09:04:04,822 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 09:04:04,825 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 09:04:04,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 09:04:04,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 09:04:04,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 09:04:04,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 09:04:04,828 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 09:04:04,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 09:04:04,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 09:04:04,828 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 09:04:04,828 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 09:04:04,829 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 09:04:04,829 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 09:04:04,829 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 09:04:04,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 09:04:04,829 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 09:04:04,830 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 09:04:04,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 09:04:04,830 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 09:04:04,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 09:04:04,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:04:04,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 09:04:04,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 09:04:04,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 09:04:04,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 09:04:04,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 09:04:04,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 09:04:04,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 09:04:04,833 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 09:04:04,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 09:04:04,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 09:04:04,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 09:04:05,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 09:04:05,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 09:04:05,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 09:04:05,048 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 09:04:05,048 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 09:04:05,049 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_size_harness.i [2023-11-23 09:04:06,254 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 09:04:06,662 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 09:04:06,663 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_size_harness.i [2023-11-23 09:04:06,696 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03984ab2f/06129ba05058418ab1ba54423587f208/FLAG9f254a575 [2023-11-23 09:04:06,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03984ab2f/06129ba05058418ab1ba54423587f208 [2023-11-23 09:04:06,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 09:04:06,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 09:04:06,711 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 09:04:06,711 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 09:04:06,717 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 09:04:06,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:04:06" (1/1) ... [2023-11-23 09:04:06,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f86bde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:06, skipping insertion in model container [2023-11-23 09:04:06,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:04:06" (1/1) ... [2023-11-23 09:04:06,789 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 09:04:06,996 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_size_harness.i[4497,4510] [2023-11-23 09:04:07,006 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_size_harness.i[4557,4570] [2023-11-23 09:04:07,662 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:07,663 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:07,663 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:07,664 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:07,665 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:07,674 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:07,675 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:07,676 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:07,677 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:07,926 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:04:07,927 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:04:07,927 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:04:07,948 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:04:07,949 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:04:07,949 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:04:07,950 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:04:07,950 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:04:07,953 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:04:07,954 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:04:08,085 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:08,085 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:08,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:04:08,170 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 09:04:08,188 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_size_harness.i[4497,4510] [2023-11-23 09:04:08,190 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_size_harness.i[4557,4570] [2023-11-23 09:04:08,239 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:08,239 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:08,239 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:08,241 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:08,241 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:08,251 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:08,251 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:08,252 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:08,253 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:08,279 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:04:08,289 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:04:08,289 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:04:08,290 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:04:08,290 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:04:08,291 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:04:08,291 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:04:08,291 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:04:08,292 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:04:08,292 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:04:08,311 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:08,313 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:08,319 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2023-11-23 09:04:08,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:04:08,473 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,474 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,474 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,474 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,474 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,474 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,474 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,475 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,475 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,475 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,475 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,475 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,475 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,476 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,476 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:08,482 INFO L206 MainTranslator]: Completed translation [2023-11-23 09:04:08,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:08 WrapperNode [2023-11-23 09:04:08,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 09:04:08,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 09:04:08,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 09:04:08,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 09:04:08,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:08" (1/1) ... [2023-11-23 09:04:08,562 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:08" (1/1) ... [2023-11-23 09:04:08,622 INFO L138 Inliner]: procedures = 688, calls = 1532, calls flagged for inlining = 55, calls inlined = 10, statements flattened = 666 [2023-11-23 09:04:08,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 09:04:08,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 09:04:08,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 09:04:08,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 09:04:08,630 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:08" (1/1) ... [2023-11-23 09:04:08,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:08" (1/1) ... [2023-11-23 09:04:08,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:08" (1/1) ... [2023-11-23 09:04:08,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:08" (1/1) ... [2023-11-23 09:04:08,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:08" (1/1) ... [2023-11-23 09:04:08,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:08" (1/1) ... [2023-11-23 09:04:08,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:08" (1/1) ... [2023-11-23 09:04:08,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:08" (1/1) ... [2023-11-23 09:04:08,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 09:04:08,673 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 09:04:08,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 09:04:08,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 09:04:08,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:08" (1/1) ... [2023-11-23 09:04:08,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:04:08,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:08,716 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 09:04:08,724 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 09:04:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 09:04:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 09:04:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 09:04:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 09:04:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 09:04:08,775 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 09:04:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 09:04:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 09:04:08,776 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 09:04:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 09:04:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 09:04:08,776 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 09:04:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 09:04:08,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 09:04:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 09:04:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 09:04:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 09:04:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 09:04:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 09:04:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 09:04:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 09:04:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 09:04:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 09:04:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 09:04:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 09:04:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 09:04:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 09:04:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 09:04:08,779 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 09:04:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 09:04:08,779 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 09:04:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 09:04:08,779 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 09:04:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 09:04:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 09:04:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 09:04:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 09:04:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 09:04:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 09:04:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 09:04:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 09:04:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2023-11-23 09:04:08,781 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2023-11-23 09:04:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 09:04:08,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 09:04:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 09:04:09,051 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 09:04:09,054 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 09:04:09,717 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 09:04:09,796 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 09:04:09,796 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 09:04:09,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:04:09 BoogieIcfgContainer [2023-11-23 09:04:09,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 09:04:09,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 09:04:09,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 09:04:09,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 09:04:09,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:04:06" (1/3) ... [2023-11-23 09:04:09,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36fcd835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:04:09, skipping insertion in model container [2023-11-23 09:04:09,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:08" (2/3) ... [2023-11-23 09:04:09,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36fcd835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:04:09, skipping insertion in model container [2023-11-23 09:04:09,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:04:09" (3/3) ... [2023-11-23 09:04:09,805 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_size_harness.i [2023-11-23 09:04:09,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 09:04:09,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 09:04:09,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 09:04:09,877 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;@789c0a1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 09:04:09,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 09:04:09,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 95 states have (on average 1.2736842105263158) internal successors, (121), 96 states have internal predecessors, (121), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-23 09:04:09,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 09:04:09,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:09,895 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-23 09:04:09,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:09,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:09,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1808354242, now seen corresponding path program 1 times [2023-11-23 09:04:09,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:09,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271144342] [2023-11-23 09:04:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:09,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:04:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:04:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 09:04:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:04:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:04:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:04:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 09:04:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:04:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 09:04:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 09:04:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 09:04:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:04:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 09:04:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 09:04:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 09:04:10,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:10,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271144342] [2023-11-23 09:04:10,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271144342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:10,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:10,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 09:04:10,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840303805] [2023-11-23 09:04:10,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:10,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 09:04:10,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:10,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 09:04:10,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:04:10,898 INFO L87 Difference]: Start difference. First operand has 153 states, 95 states have (on average 1.2736842105263158) internal successors, (121), 96 states have internal predecessors, (121), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 09:04:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:11,535 INFO L93 Difference]: Finished difference Result 363 states and 528 transitions. [2023-11-23 09:04:11,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:04:11,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 100 [2023-11-23 09:04:11,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:11,545 INFO L225 Difference]: With dead ends: 363 [2023-11-23 09:04:11,546 INFO L226 Difference]: Without dead ends: 216 [2023-11-23 09:04:11,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:04:11,552 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 130 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:11,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 217 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 09:04:11,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-23 09:04:11,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 151. [2023-11-23 09:04:11,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 95 states have internal predecessors, (117), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-23 09:04:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 194 transitions. [2023-11-23 09:04:11,598 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 194 transitions. Word has length 100 [2023-11-23 09:04:11,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:11,599 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 194 transitions. [2023-11-23 09:04:11,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 09:04:11,599 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 194 transitions. [2023-11-23 09:04:11,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 09:04:11,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:11,604 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-23 09:04:11,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 09:04:11,604 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:11,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:11,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1711389446, now seen corresponding path program 1 times [2023-11-23 09:04:11,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:11,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743683177] [2023-11-23 09:04:11,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:11,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:11,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:04:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:04:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 09:04:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:04:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:04:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:04:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 09:04:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:04:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 09:04:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 09:04:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 09:04:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:04:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 09:04:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 09:04:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:12,205 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 09:04:12,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:12,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743683177] [2023-11-23 09:04:12,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743683177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:12,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:12,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:04:12,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536317023] [2023-11-23 09:04:12,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:12,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:04:12,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:12,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:04:12,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:04:12,209 INFO L87 Difference]: Start difference. First operand 151 states and 194 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 09:04:13,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:13,088 INFO L93 Difference]: Finished difference Result 332 states and 451 transitions. [2023-11-23 09:04:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 09:04:13,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 100 [2023-11-23 09:04:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:13,091 INFO L225 Difference]: With dead ends: 332 [2023-11-23 09:04:13,091 INFO L226 Difference]: Without dead ends: 216 [2023-11-23 09:04:13,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-23 09:04:13,092 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 199 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:13,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 421 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 09:04:13,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-23 09:04:13,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 151. [2023-11-23 09:04:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 94 states have (on average 1.2340425531914894) internal successors, (116), 95 states have internal predecessors, (116), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-23 09:04:13,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 193 transitions. [2023-11-23 09:04:13,108 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 193 transitions. Word has length 100 [2023-11-23 09:04:13,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:13,112 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 193 transitions. [2023-11-23 09:04:13,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 09:04:13,112 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 193 transitions. [2023-11-23 09:04:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 09:04:13,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:13,114 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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] [2023-11-23 09:04:13,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 09:04:13,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:13,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:13,116 INFO L85 PathProgramCache]: Analyzing trace with hash 629786340, now seen corresponding path program 1 times [2023-11-23 09:04:13,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:13,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531263490] [2023-11-23 09:04:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:13,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:04:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:04:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 09:04:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:04:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:04:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:04:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 09:04:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 09:04:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 09:04:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 09:04:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:04:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 09:04:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:04:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 09:04:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 09:04:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 09:04:13,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:13,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531263490] [2023-11-23 09:04:13,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531263490] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:04:13,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098146735] [2023-11-23 09:04:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:13,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:13,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:13,795 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 09:04:13,803 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 09:04:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:14,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 09:04:14,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 09:04:14,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:14,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098146735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:14,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:04:14,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-23 09:04:14,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449381612] [2023-11-23 09:04:14,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:14,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 09:04:14,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:14,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 09:04:14,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-23 09:04:14,312 INFO L87 Difference]: Start difference. First operand 151 states and 193 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 09:04:14,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:14,643 INFO L93 Difference]: Finished difference Result 286 states and 373 transitions. [2023-11-23 09:04:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 09:04:14,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 108 [2023-11-23 09:04:14,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:14,645 INFO L225 Difference]: With dead ends: 286 [2023-11-23 09:04:14,645 INFO L226 Difference]: Without dead ends: 153 [2023-11-23 09:04:14,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-11-23 09:04:14,646 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 81 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:14,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 900 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:04:14,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-23 09:04:14,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-11-23 09:04:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 95 states have (on average 1.231578947368421) internal successors, (117), 97 states have internal predecessors, (117), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2023-11-23 09:04:14,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 197 transitions. [2023-11-23 09:04:14,668 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 197 transitions. Word has length 108 [2023-11-23 09:04:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:14,668 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 197 transitions. [2023-11-23 09:04:14,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 09:04:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 197 transitions. [2023-11-23 09:04:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 09:04:14,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:14,670 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:14,690 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 09:04:14,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:14,882 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:14,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:14,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1586857640, now seen corresponding path program 1 times [2023-11-23 09:04:14,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:14,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409146911] [2023-11-23 09:04:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:14,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:14,983 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:14,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751745374] [2023-11-23 09:04:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:14,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:14,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:14,985 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 09:04:14,990 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 09:04:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:15,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 09:04:15,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 09:04:15,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:15,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:15,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409146911] [2023-11-23 09:04:15,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:15,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751745374] [2023-11-23 09:04:15,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751745374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:15,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:15,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 09:04:15,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450473385] [2023-11-23 09:04:15,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:15,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 09:04:15,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:15,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 09:04:15,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:04:15,419 INFO L87 Difference]: Start difference. First operand 153 states and 197 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 09:04:15,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:15,609 INFO L93 Difference]: Finished difference Result 274 states and 361 transitions. [2023-11-23 09:04:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:04:15,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 121 [2023-11-23 09:04:15,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:15,610 INFO L225 Difference]: With dead ends: 274 [2023-11-23 09:04:15,610 INFO L226 Difference]: Without dead ends: 158 [2023-11-23 09:04:15,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:04:15,612 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 10 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:15,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 524 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:04:15,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-23 09:04:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2023-11-23 09:04:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 99 states have internal predecessors, (119), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2023-11-23 09:04:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 199 transitions. [2023-11-23 09:04:15,621 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 199 transitions. Word has length 121 [2023-11-23 09:04:15,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:15,621 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 199 transitions. [2023-11-23 09:04:15,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 09:04:15,621 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 199 transitions. [2023-11-23 09:04:15,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 09:04:15,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:15,623 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:15,664 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 09:04:15,836 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,SelfDestructingSolverStorable3 [2023-11-23 09:04:15,837 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:15,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:15,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2020586726, now seen corresponding path program 1 times [2023-11-23 09:04:15,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:15,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726185128] [2023-11-23 09:04:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:15,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:15,885 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:15,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723345017] [2023-11-23 09:04:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:15,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:15,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:15,887 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 09:04:15,888 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 09:04:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:16,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 2465 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 09:04:16,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 09:04:16,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:16,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:16,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726185128] [2023-11-23 09:04:16,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:16,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723345017] [2023-11-23 09:04:16,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723345017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:16,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:16,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:04:16,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604868660] [2023-11-23 09:04:16,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:16,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:04:16,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:16,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:04:16,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:04:16,329 INFO L87 Difference]: Start difference. First operand 155 states and 199 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-23 09:04:16,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:16,621 INFO L93 Difference]: Finished difference Result 276 states and 355 transitions. [2023-11-23 09:04:16,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 09:04:16,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 121 [2023-11-23 09:04:16,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:16,626 INFO L225 Difference]: With dead ends: 276 [2023-11-23 09:04:16,626 INFO L226 Difference]: Without dead ends: 155 [2023-11-23 09:04:16,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 09:04:16,628 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 48 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:16,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 762 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:04:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-23 09:04:16,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-23 09:04:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 99 states have internal predecessors, (118), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2023-11-23 09:04:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 198 transitions. [2023-11-23 09:04:16,668 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 198 transitions. Word has length 121 [2023-11-23 09:04:16,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:16,669 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 198 transitions. [2023-11-23 09:04:16,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-23 09:04:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 198 transitions. [2023-11-23 09:04:16,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 09:04:16,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:16,672 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 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, 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 09:04:16,703 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 09:04:16,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:16,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:16,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:16,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1846766475, now seen corresponding path program 1 times [2023-11-23 09:04:16,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:16,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721395958] [2023-11-23 09:04:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:16,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:16,943 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:16,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872083587] [2023-11-23 09:04:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:16,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:16,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:16,945 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 09:04:16,948 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 09:04:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:17,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 09:04:17,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:17,449 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 09:04:17,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:17,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:17,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721395958] [2023-11-23 09:04:17,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:17,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872083587] [2023-11-23 09:04:17,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872083587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:17,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:17,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:04:17,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580487416] [2023-11-23 09:04:17,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:17,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:04:17,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:17,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:04:17,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:04:17,452 INFO L87 Difference]: Start difference. First operand 155 states and 198 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 09:04:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:17,838 INFO L93 Difference]: Finished difference Result 289 states and 372 transitions. [2023-11-23 09:04:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 09:04:17,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 137 [2023-11-23 09:04:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:17,840 INFO L225 Difference]: With dead ends: 289 [2023-11-23 09:04:17,840 INFO L226 Difference]: Without dead ends: 155 [2023-11-23 09:04:17,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 09:04:17,841 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 99 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:17,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1001 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:04:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-23 09:04:17,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-23 09:04:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 99 states have internal predecessors, (118), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 09:04:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 197 transitions. [2023-11-23 09:04:17,849 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 197 transitions. Word has length 137 [2023-11-23 09:04:17,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:17,849 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 197 transitions. [2023-11-23 09:04:17,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 09:04:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 197 transitions. [2023-11-23 09:04:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-23 09:04:17,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:17,851 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:17,870 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 09:04:18,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:18,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:18,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:18,065 INFO L85 PathProgramCache]: Analyzing trace with hash 392295647, now seen corresponding path program 2 times [2023-11-23 09:04:18,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:18,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625292354] [2023-11-23 09:04:18,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:18,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:18,112 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:18,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269912314] [2023-11-23 09:04:18,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 09:04:18,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:18,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:18,114 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 09:04:18,115 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 09:04:18,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 09:04:18,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 09:04:18,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 2676 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 09:04:18,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 09:04:18,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:18,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:18,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625292354] [2023-11-23 09:04:18,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:18,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269912314] [2023-11-23 09:04:18,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269912314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:18,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:18,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:04:18,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675640152] [2023-11-23 09:04:18,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:18,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:04:18,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:18,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:04:18,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:04:18,647 INFO L87 Difference]: Start difference. First operand 155 states and 197 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 09:04:18,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:18,888 INFO L93 Difference]: Finished difference Result 255 states and 321 transitions. [2023-11-23 09:04:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 09:04:18,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 150 [2023-11-23 09:04:18,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:18,889 INFO L225 Difference]: With dead ends: 255 [2023-11-23 09:04:18,889 INFO L226 Difference]: Without dead ends: 153 [2023-11-23 09:04:18,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 09:04:18,890 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 25 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:18,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1070 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:04:18,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-23 09:04:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-11-23 09:04:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 97 states have internal predecessors, (116), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-23 09:04:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 193 transitions. [2023-11-23 09:04:18,898 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 193 transitions. Word has length 150 [2023-11-23 09:04:18,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:18,898 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 193 transitions. [2023-11-23 09:04:18,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 09:04:18,899 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 193 transitions. [2023-11-23 09:04:18,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-23 09:04:18,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:18,900 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:18,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 09:04:19,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:19,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:19,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:19,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1574459119, now seen corresponding path program 1 times [2023-11-23 09:04:19,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:19,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317198731] [2023-11-23 09:04:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:19,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:19,180 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:19,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134074113] [2023-11-23 09:04:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:19,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:19,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:19,182 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 09:04:19,183 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 09:04:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:19,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-23 09:04:19,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:20,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-23 09:04:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 09:04:20,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:20,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:20,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317198731] [2023-11-23 09:04:20,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:20,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134074113] [2023-11-23 09:04:20,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134074113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:20,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:20,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 09:04:20,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806338033] [2023-11-23 09:04:20,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:20,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 09:04:20,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:20,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 09:04:20,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 09:04:20,182 INFO L87 Difference]: Start difference. First operand 153 states and 193 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 5 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-23 09:04:21,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:21,941 INFO L93 Difference]: Finished difference Result 289 states and 371 transitions. [2023-11-23 09:04:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 09:04:21,942 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 5 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 176 [2023-11-23 09:04:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:21,943 INFO L225 Difference]: With dead ends: 289 [2023-11-23 09:04:21,943 INFO L226 Difference]: Without dead ends: 173 [2023-11-23 09:04:21,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2023-11-23 09:04:21,945 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 110 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:21,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1408 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 09:04:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-23 09:04:21,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 166. [2023-11-23 09:04:21,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 109 states have internal predecessors, (132), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2023-11-23 09:04:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 213 transitions. [2023-11-23 09:04:21,954 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 213 transitions. Word has length 176 [2023-11-23 09:04:21,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:21,955 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 213 transitions. [2023-11-23 09:04:21,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 5 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-23 09:04:21,955 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 213 transitions. [2023-11-23 09:04:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 09:04:21,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:21,956 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:21,975 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 09:04:22,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:22,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:22,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:22,171 INFO L85 PathProgramCache]: Analyzing trace with hash -528806505, now seen corresponding path program 1 times [2023-11-23 09:04:22,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:22,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134828429] [2023-11-23 09:04:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:22,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:22,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:22,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760832970] [2023-11-23 09:04:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:22,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:22,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:22,260 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 09:04:22,283 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 09:04:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:22,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 09:04:22,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 09:04:22,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:22,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:22,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134828429] [2023-11-23 09:04:22,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:22,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760832970] [2023-11-23 09:04:22,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760832970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:22,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:22,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:04:22,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085521743] [2023-11-23 09:04:22,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:22,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:04:22,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:22,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:04:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:04:22,883 INFO L87 Difference]: Start difference. First operand 166 states and 213 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:04:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:23,268 INFO L93 Difference]: Finished difference Result 323 states and 419 transitions. [2023-11-23 09:04:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 09:04:23,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2023-11-23 09:04:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:23,270 INFO L225 Difference]: With dead ends: 323 [2023-11-23 09:04:23,270 INFO L226 Difference]: Without dead ends: 194 [2023-11-23 09:04:23,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 09:04:23,271 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 21 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:23,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 764 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:04:23,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-23 09:04:23,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 174. [2023-11-23 09:04:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 116 states have (on average 1.2241379310344827) internal successors, (142), 117 states have internal predecessors, (142), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2023-11-23 09:04:23,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 223 transitions. [2023-11-23 09:04:23,281 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 223 transitions. Word has length 178 [2023-11-23 09:04:23,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:23,281 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 223 transitions. [2023-11-23 09:04:23,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:04:23,281 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 223 transitions. [2023-11-23 09:04:23,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 09:04:23,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:23,283 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:23,303 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 09:04:23,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:23,504 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:23,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:23,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1037951445, now seen corresponding path program 1 times [2023-11-23 09:04:23,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:23,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078787342] [2023-11-23 09:04:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:23,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:23,591 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:23,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729894405] [2023-11-23 09:04:23,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:23,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:23,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:23,593 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 09:04:23,595 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 09:04:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:24,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 09:04:24,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 09:04:24,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:24,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:24,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078787342] [2023-11-23 09:04:24,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:24,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729894405] [2023-11-23 09:04:24,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729894405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:24,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:24,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 09:04:24,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023913522] [2023-11-23 09:04:24,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:24,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 09:04:24,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:24,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 09:04:24,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:04:24,111 INFO L87 Difference]: Start difference. First operand 174 states and 223 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:04:24,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:24,329 INFO L93 Difference]: Finished difference Result 319 states and 411 transitions. [2023-11-23 09:04:24,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:04:24,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2023-11-23 09:04:24,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:24,331 INFO L225 Difference]: With dead ends: 319 [2023-11-23 09:04:24,331 INFO L226 Difference]: Without dead ends: 182 [2023-11-23 09:04:24,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:04:24,331 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 3 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:24,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 515 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:04:24,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-23 09:04:24,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178. [2023-11-23 09:04:24,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 120 states have (on average 1.2166666666666666) internal successors, (146), 121 states have internal predecessors, (146), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2023-11-23 09:04:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 227 transitions. [2023-11-23 09:04:24,338 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 227 transitions. Word has length 178 [2023-11-23 09:04:24,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:24,339 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 227 transitions. [2023-11-23 09:04:24,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:04:24,339 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 227 transitions. [2023-11-23 09:04:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 09:04:24,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:24,340 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:24,358 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 09:04:24,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 09:04:24,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:24,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:24,541 INFO L85 PathProgramCache]: Analyzing trace with hash -104551021, now seen corresponding path program 1 times [2023-11-23 09:04:24,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:24,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129693713] [2023-11-23 09:04:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:24,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:24,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:24,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130090753] [2023-11-23 09:04:24,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:24,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:24,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:24,590 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 09:04:24,592 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 09:04:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:25,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-23 09:04:25,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:25,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-23 09:04:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 09:04:25,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:25,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:25,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129693713] [2023-11-23 09:04:25,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:25,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130090753] [2023-11-23 09:04:25,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130090753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:25,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:25,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 09:04:25,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508284980] [2023-11-23 09:04:25,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:25,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 09:04:25,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:25,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 09:04:25,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-23 09:04:25,246 INFO L87 Difference]: Start difference. First operand 178 states and 227 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 5 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-23 09:04:25,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:25,785 INFO L93 Difference]: Finished difference Result 343 states and 443 transitions. [2023-11-23 09:04:25,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 09:04:25,785 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 5 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 178 [2023-11-23 09:04:25,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:25,786 INFO L225 Difference]: With dead ends: 343 [2023-11-23 09:04:25,786 INFO L226 Difference]: Without dead ends: 202 [2023-11-23 09:04:25,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-11-23 09:04:25,787 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 68 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:25,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1225 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 09:04:25,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-23 09:04:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 184. [2023-11-23 09:04:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 125 states have (on average 1.2) internal successors, (150), 126 states have internal predecessors, (150), 39 states have call successors, (39), 17 states have call predecessors, (39), 19 states have return successors, (46), 40 states have call predecessors, (46), 38 states have call successors, (46) [2023-11-23 09:04:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 235 transitions. [2023-11-23 09:04:25,795 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 235 transitions. Word has length 178 [2023-11-23 09:04:25,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:25,795 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 235 transitions. [2023-11-23 09:04:25,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 5 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-23 09:04:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 235 transitions. [2023-11-23 09:04:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 09:04:25,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:25,797 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:25,818 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 09:04:26,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:26,016 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:26,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:26,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1887029845, now seen corresponding path program 1 times [2023-11-23 09:04:26,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:26,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633892349] [2023-11-23 09:04:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:26,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:26,062 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:26,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359688945] [2023-11-23 09:04:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:26,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:26,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:26,064 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 09:04:26,088 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 09:04:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:26,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 2949 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 09:04:26,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:26,681 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 09:04:26,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:26,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:26,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633892349] [2023-11-23 09:04:26,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:26,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359688945] [2023-11-23 09:04:26,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359688945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:26,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:26,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 09:04:26,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655957260] [2023-11-23 09:04:26,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:26,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 09:04:26,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:26,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 09:04:26,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:04:26,685 INFO L87 Difference]: Start difference. First operand 184 states and 235 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:04:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:27,025 INFO L93 Difference]: Finished difference Result 336 states and 439 transitions. [2023-11-23 09:04:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 09:04:27,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2023-11-23 09:04:27,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:27,027 INFO L225 Difference]: With dead ends: 336 [2023-11-23 09:04:27,027 INFO L226 Difference]: Without dead ends: 189 [2023-11-23 09:04:27,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 09:04:27,029 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 10 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:27,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 647 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:04:27,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-23 09:04:27,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2023-11-23 09:04:27,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 126 states have (on average 1.1984126984126984) internal successors, (151), 127 states have internal predecessors, (151), 39 states have call successors, (39), 17 states have call predecessors, (39), 19 states have return successors, (46), 40 states have call predecessors, (46), 38 states have call successors, (46) [2023-11-23 09:04:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 236 transitions. [2023-11-23 09:04:27,043 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 236 transitions. Word has length 178 [2023-11-23 09:04:27,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:27,044 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 236 transitions. [2023-11-23 09:04:27,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:04:27,045 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 236 transitions. [2023-11-23 09:04:27,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 09:04:27,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:27,047 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:27,087 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 09:04:27,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 09:04:27,264 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:27,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:27,265 INFO L85 PathProgramCache]: Analyzing trace with hash -133051311, now seen corresponding path program 1 times [2023-11-23 09:04:27,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:27,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239973408] [2023-11-23 09:04:27,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:27,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:27,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:27,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207883834] [2023-11-23 09:04:27,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:27,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:27,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:27,329 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 09:04:27,334 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 09:04:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:30,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 278 conjunts are in the unsatisfiable core [2023-11-23 09:04:30,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:30,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 09:04:30,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 09:04:56,660 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 09:04:56,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 776 treesize of output 1826 [2023-11-23 09:04:57,104 INFO L224 Elim1Store]: Index analysis took 287 ms [2023-11-23 09:05:46,561 WARN L293 SmtUtils]: Spent 49.45s on a formula simplification. DAG size of input: 766 DAG size of output: 450 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-23 09:05:46,562 INFO L349 Elim1Store]: treesize reduction 1312, result has 41.4 percent of original size [2023-11-23 09:05:46,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 16 new quantified variables, introduced 96 case distinctions, treesize of input 589 treesize of output 1998 [2023-11-23 09:05:47,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 09:05:47,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 513 treesize of output 518 [2023-11-23 09:05:47,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 09:05:47,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 507 treesize of output 512 [2023-11-23 09:05:48,028 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 09:05:48,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 501 treesize of output 506 [2023-11-23 09:05:48,404 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 09:05:48,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 495 treesize of output 500 Killed by 15