./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_pop_back_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_linked_list_pop_back_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 bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:51:20,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:51:20,240 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:51:20,245 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:51:20,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:51:20,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:51:20,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:51:20,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:51:20,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:51:20,271 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:51:20,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:51:20,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:51:20,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:51:20,274 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:51:20,274 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:51:20,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:51:20,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:51:20,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:51:20,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:51:20,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:51:20,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:51:20,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:51:20,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:51:20,277 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:51:20,277 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:51:20,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:51:20,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:51:20,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:51:20,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:51:20,278 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:51:20,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:51:20,279 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:51:20,280 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:51:20,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:51:20,280 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:51:20,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:51:20,280 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:51:20,280 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:51:20,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:51:20,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:51:20,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:51:20,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:51:20,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:51:20,502 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:51:20,502 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:51:20,503 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_pop_back_harness.i [2023-11-23 08:51:21,679 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:51:22,088 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:51:22,089 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_pop_back_harness.i [2023-11-23 08:51:22,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ca8616b/6060984f2cbb4e588e20945093f20cca/FLAG858c047b1 [2023-11-23 08:51:22,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ca8616b/6060984f2cbb4e588e20945093f20cca [2023-11-23 08:51:22,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:51:22,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:51:22,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:51:22,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:51:22,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:51:22,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:51:22" (1/1) ... [2023-11-23 08:51:22,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6064d53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:22, skipping insertion in model container [2023-11-23 08:51:22,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:51:22" (1/1) ... [2023-11-23 08:51:22,226 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:51:22,459 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_linked_list_pop_back_harness.i[4498,4511] [2023-11-23 08:51:22,466 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_linked_list_pop_back_harness.i[4558,4571] [2023-11-23 08:51:22,987 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:22,992 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:22,993 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:22,995 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:22,997 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,014 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,016 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,017 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,021 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,023 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,024 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,038 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,038 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,216 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:51:23,217 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:51:23,218 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:51:23,219 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:51:23,220 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:51:23,220 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:51:23,221 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:51:23,221 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:51:23,221 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:51:23,222 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:51:23,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:51:23,386 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:51:23,401 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_linked_list_pop_back_harness.i[4498,4511] [2023-11-23 08:51:23,401 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_linked_list_pop_back_harness.i[4558,4571] [2023-11-23 08:51:23,432 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,433 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,433 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,433 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,434 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,440 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,441 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,442 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,442 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,442 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,443 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,445 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,446 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:23,468 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:51:23,470 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:51:23,471 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:51:23,471 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:51:23,472 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:51:23,478 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:51:23,478 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:51:23,479 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:51:23,479 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:51:23,479 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:51:23,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:51:23,671 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,672 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,672 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,672 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,672 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,672 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,672 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,672 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,673 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,673 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,673 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,673 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,673 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,673 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,673 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,673 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:23,681 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:51:23,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:23 WrapperNode [2023-11-23 08:51:23,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:51:23,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:51:23,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:51:23,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:51:23,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:23" (1/1) ... [2023-11-23 08:51:23,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:23" (1/1) ... [2023-11-23 08:51:23,776 INFO L138 Inliner]: procedures = 678, calls = 1046, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 224 [2023-11-23 08:51:23,782 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:51:23,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:51:23,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:51:23,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:51:23,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:23" (1/1) ... [2023-11-23 08:51:23,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:23" (1/1) ... [2023-11-23 08:51:23,806 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:23" (1/1) ... [2023-11-23 08:51:23,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:23" (1/1) ... [2023-11-23 08:51:23,825 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:23" (1/1) ... [2023-11-23 08:51:23,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:23" (1/1) ... [2023-11-23 08:51:23,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:23" (1/1) ... [2023-11-23 08:51:23,854 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:23" (1/1) ... [2023-11-23 08:51:23,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:51:23,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:51:23,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:51:23,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:51:23,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:23" (1/1) ... [2023-11-23 08:51:23,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:51:23,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:51:23,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:51:23,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:51:23,963 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 08:51:23,963 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 08:51:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2023-11-23 08:51:23,965 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2023-11-23 08:51:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:51:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:51:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:51:23,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:51:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-23 08:51:23,966 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-23 08:51:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:51:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2023-11-23 08:51:23,966 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2023-11-23 08:51:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:51:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:51:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:51:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:51:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2023-11-23 08:51:23,968 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2023-11-23 08:51:23,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 08:51:23,968 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 08:51:23,968 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:51:23,968 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:51:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:51:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:51:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:51:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 08:51:23,969 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 08:51:23,970 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2023-11-23 08:51:23,970 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2023-11-23 08:51:23,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:51:24,149 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:51:24,151 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:51:24,467 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:51:24,520 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:51:24,520 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-23 08:51:24,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:51:24 BoogieIcfgContainer [2023-11-23 08:51:24,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:51:24,522 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:51:24,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:51:24,526 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:51:24,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:51:22" (1/3) ... [2023-11-23 08:51:24,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449c24d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:51:24, skipping insertion in model container [2023-11-23 08:51:24,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:23" (2/3) ... [2023-11-23 08:51:24,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449c24d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:51:24, skipping insertion in model container [2023-11-23 08:51:24,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:51:24" (3/3) ... [2023-11-23 08:51:24,533 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_back_harness.i [2023-11-23 08:51:24,549 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:51:24,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:51:24,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:51:24,613 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;@31653131, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:51:24,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:51:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 73 states have (on average 1.36986301369863) internal successors, (100), 74 states have internal predecessors, (100), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 08:51:24,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 08:51:24,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:24,633 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:24,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:24,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:24,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1865494359, now seen corresponding path program 1 times [2023-11-23 08:51:24,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:24,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384561456] [2023-11-23 08:51:24,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:24,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:51:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:51:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:51:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:51:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:51:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:51:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:51:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:51:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:51:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:51:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:51:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:51:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-11-23 08:51:25,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:25,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384561456] [2023-11-23 08:51:25,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384561456] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:51:25,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602016781] [2023-11-23 08:51:25,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:25,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:25,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:51:25,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:51:25,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:51:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:51:25,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-23 08:51:25,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:51:25,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602016781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:51:25,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:51:25,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-11-23 08:51:25,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650644105] [2023-11-23 08:51:25,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:51:25,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:51:25,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:25,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:51:25,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:51:25,734 INFO L87 Difference]: Start difference. First operand has 121 states, 73 states have (on average 1.36986301369863) internal successors, (100), 74 states have internal predecessors, (100), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:51:25,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:25,818 INFO L93 Difference]: Finished difference Result 244 states and 384 transitions. [2023-11-23 08:51:25,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:51:25,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 110 [2023-11-23 08:51:25,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:25,828 INFO L225 Difference]: With dead ends: 244 [2023-11-23 08:51:25,828 INFO L226 Difference]: Without dead ends: 127 [2023-11-23 08:51:25,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:51:25,834 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 12 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:25,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 446 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 08:51:25,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-23 08:51:25,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 121. [2023-11-23 08:51:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 74 states have internal predecessors, (94), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-23 08:51:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 167 transitions. [2023-11-23 08:51:25,880 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 167 transitions. Word has length 110 [2023-11-23 08:51:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:25,881 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 167 transitions. [2023-11-23 08:51:25,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:51:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 167 transitions. [2023-11-23 08:51:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 08:51:25,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:25,900 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:25,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 08:51:26,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 08:51:26,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:26,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:26,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1194339989, now seen corresponding path program 1 times [2023-11-23 08:51:26,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:26,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428530569] [2023-11-23 08:51:26,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:26,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:51:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:51:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:51:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:51:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:51:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:51:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:51:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:51:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:51:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:51:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:51:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:51:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-11-23 08:51:26,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:26,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428530569] [2023-11-23 08:51:26,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428530569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:51:26,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964662917] [2023-11-23 08:51:26,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:26,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:26,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:51:26,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:51:26,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:51:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:26,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:51:26,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:26,548 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 08:51:26,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:51:26,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964662917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:51:26,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:51:26,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-11-23 08:51:26,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123710624] [2023-11-23 08:51:26,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:51:26,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:51:26,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:26,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:51:26,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:51:26,554 INFO L87 Difference]: Start difference. First operand 121 states and 167 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:51:26,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:26,643 INFO L93 Difference]: Finished difference Result 230 states and 323 transitions. [2023-11-23 08:51:26,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:51:26,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 110 [2023-11-23 08:51:26,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:26,645 INFO L225 Difference]: With dead ends: 230 [2023-11-23 08:51:26,645 INFO L226 Difference]: Without dead ends: 125 [2023-11-23 08:51:26,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:51:26,647 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 3 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:26,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 442 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 08:51:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-23 08:51:26,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2023-11-23 08:51:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 77 states have internal predecessors, (97), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-23 08:51:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions. [2023-11-23 08:51:26,656 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 170 transitions. Word has length 110 [2023-11-23 08:51:26,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:26,657 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 170 transitions. [2023-11-23 08:51:26,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:51:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 170 transitions. [2023-11-23 08:51:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 08:51:26,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:26,659 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:26,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:26,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 08:51:26,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:26,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1019340115, now seen corresponding path program 1 times [2023-11-23 08:51:26,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:26,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295988057] [2023-11-23 08:51:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:26,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:51:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:51:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:51:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:51:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:51:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:51:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:51:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:51:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:51:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:51:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:51:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:51:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 08:51:27,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:27,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295988057] [2023-11-23 08:51:27,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295988057] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:51:27,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129340243] [2023-11-23 08:51:27,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:27,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:27,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:51:27,213 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:51:27,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:51:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:27,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-23 08:51:27,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:27,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-11-23 08:51:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 08:51:30,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:51:30,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129340243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:51:30,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:51:30,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2023-11-23 08:51:30,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471369782] [2023-11-23 08:51:30,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:51:30,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:51:30,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:30,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:51:30,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:51:30,940 INFO L87 Difference]: Start difference. First operand 124 states and 170 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 08:51:32,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:51:35,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:51:37,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:51:39,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:51:41,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:51:45,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:51:47,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:51:50,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:51:51,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:51:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:52,029 INFO L93 Difference]: Finished difference Result 332 states and 454 transitions. [2023-11-23 08:51:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 08:51:52,030 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 110 [2023-11-23 08:51:52,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:52,040 INFO L225 Difference]: With dead ends: 332 [2023-11-23 08:51:52,040 INFO L226 Difference]: Without dead ends: 224 [2023-11-23 08:51:52,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 125 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:51:52,045 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 95 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 43 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:52,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 794 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 569 Invalid, 9 Unknown, 0 Unchecked, 21.0s Time] [2023-11-23 08:51:52,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-23 08:51:52,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 213. [2023-11-23 08:51:52,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 135 states have (on average 1.2740740740740741) internal successors, (172), 138 states have internal predecessors, (172), 60 states have call successors, (60), 17 states have call predecessors, (60), 17 states have return successors, (61), 57 states have call predecessors, (61), 59 states have call successors, (61) [2023-11-23 08:51:52,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 293 transitions. [2023-11-23 08:51:52,082 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 293 transitions. Word has length 110 [2023-11-23 08:51:52,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:52,084 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 293 transitions. [2023-11-23 08:51:52,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 08:51:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 293 transitions. [2023-11-23 08:51:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 08:51:52,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:52,093 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:52,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:52,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:52,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:52,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:52,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1170749351, now seen corresponding path program 1 times [2023-11-23 08:51:52,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:52,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32270362] [2023-11-23 08:51:52,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:52,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:52,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:52,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:51:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:52,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:51:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:52,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:51:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:52,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:51:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:52,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:52,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:51:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:52,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:51:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:52,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:51:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:52,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:51:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:53,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:51:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:53,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:51:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:53,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:53,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:51:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:53,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:51:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-23 08:51:53,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:53,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32270362] [2023-11-23 08:51:53,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32270362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:51:53,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524206132] [2023-11-23 08:51:53,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:53,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:53,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:51:53,059 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:51:53,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:51:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:53,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-23 08:51:53,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:53,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-11-23 08:51:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-23 08:51:59,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:51:59,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524206132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:51:59,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:51:59,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2023-11-23 08:51:59,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562591397] [2023-11-23 08:51:59,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:51:59,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:51:59,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:59,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:51:59,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:51:59,841 INFO L87 Difference]: Start difference. First operand 213 states and 293 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-23 08:52:01,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:03,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:05,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:07,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:09,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:14,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:16,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:18,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:20,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:23,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:23,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:52:23,209 INFO L93 Difference]: Finished difference Result 375 states and 504 transitions. [2023-11-23 08:52:23,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:52:23,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 110 [2023-11-23 08:52:23,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:52:23,211 INFO L225 Difference]: With dead ends: 375 [2023-11-23 08:52:23,211 INFO L226 Difference]: Without dead ends: 217 [2023-11-23 08:52:23,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 120 SyntacticMatches, 12 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2023-11-23 08:52:23,212 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 112 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 48 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:52:23,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 684 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 590 Invalid, 10 Unknown, 0 Unchecked, 23.2s Time] [2023-11-23 08:52:23,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-23 08:52:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 206. [2023-11-23 08:52:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 129 states have (on average 1.2790697674418605) internal successors, (165), 131 states have internal predecessors, (165), 60 states have call successors, (60), 17 states have call predecessors, (60), 16 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-23 08:52:23,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 284 transitions. [2023-11-23 08:52:23,225 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 284 transitions. Word has length 110 [2023-11-23 08:52:23,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:52:23,226 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 284 transitions. [2023-11-23 08:52:23,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-23 08:52:23,226 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 284 transitions. [2023-11-23 08:52:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 08:52:23,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:52:23,228 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:52:23,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 08:52:23,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:52:23,440 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:52:23,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:52:23,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1695217767, now seen corresponding path program 1 times [2023-11-23 08:52:23,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:52:23,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807753610] [2023-11-23 08:52:23,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:52:23,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:52:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:52:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:52:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:52:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:52:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:52:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:52:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:52:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:52:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:52:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:52:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:52:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:52:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 08:52:23,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:52:23,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807753610] [2023-11-23 08:52:23,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807753610] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:52:23,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173573595] [2023-11-23 08:52:23,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:52:23,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:52:23,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:52:23,667 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:52:23,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:52:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:23,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-23 08:52:23,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:52:23,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-23 08:52:23,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-23 08:52:23,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-11-23 08:52:23,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2023-11-23 08:52:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-23 08:52:25,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:52:25,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173573595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:52:25,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:52:25,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2023-11-23 08:52:25,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429942736] [2023-11-23 08:52:25,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:52:25,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:52:25,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:52:25,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:52:25,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:52:25,754 INFO L87 Difference]: Start difference. First operand 206 states and 284 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 08:52:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:52:26,739 INFO L93 Difference]: Finished difference Result 358 states and 485 transitions. [2023-11-23 08:52:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 08:52:26,739 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 110 [2023-11-23 08:52:26,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:52:26,742 INFO L225 Difference]: With dead ends: 358 [2023-11-23 08:52:26,742 INFO L226 Difference]: Without dead ends: 209 [2023-11-23 08:52:26,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 113 SyntacticMatches, 20 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:52:26,743 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 84 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:52:26,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 898 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:52:26,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-23 08:52:26,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 206. [2023-11-23 08:52:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 129 states have (on average 1.2713178294573644) internal successors, (164), 131 states have internal predecessors, (164), 60 states have call successors, (60), 17 states have call predecessors, (60), 16 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-23 08:52:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 283 transitions. [2023-11-23 08:52:26,759 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 283 transitions. Word has length 110 [2023-11-23 08:52:26,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:52:26,759 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 283 transitions. [2023-11-23 08:52:26,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 08:52:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 283 transitions. [2023-11-23 08:52:26,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 08:52:26,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:52:26,761 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:52:26,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 08:52:26,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:52:26,974 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:52:26,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:52:26,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1870217641, now seen corresponding path program 1 times [2023-11-23 08:52:26,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:52:26,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247421238] [2023-11-23 08:52:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:52:26,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:52:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:52:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:52:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:52:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:52:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:52:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:52:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:52:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:52:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:52:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:52:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:52:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:52:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 08:52:27,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:52:27,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247421238] [2023-11-23 08:52:27,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247421238] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:52:27,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104179861] [2023-11-23 08:52:27,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:52:27,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:52:27,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:52:27,229 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:52:27,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 08:52:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:27,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-23 08:52:27,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:52:27,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-23 08:52:27,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:52:27,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-23 08:52:27,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-11-23 08:52:27,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 21 [2023-11-23 08:52:27,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-23 08:52:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-23 08:52:28,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:52:28,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104179861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:52:28,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:52:28,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2023-11-23 08:52:28,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803993650] [2023-11-23 08:52:28,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:52:28,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:52:28,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:52:28,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:52:28,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:52:28,323 INFO L87 Difference]: Start difference. First operand 206 states and 283 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 08:52:30,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:32,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:34,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:36,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:38,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:41,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:43,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:45,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:52:45,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:52:45,159 INFO L93 Difference]: Finished difference Result 359 states and 484 transitions. [2023-11-23 08:52:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:52:45,160 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 110 [2023-11-23 08:52:45,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:52:45,161 INFO L225 Difference]: With dead ends: 359 [2023-11-23 08:52:45,161 INFO L226 Difference]: Without dead ends: 209 [2023-11-23 08:52:45,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 112 SyntacticMatches, 20 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-23 08:52:45,162 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 98 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 40 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:52:45,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 776 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 618 Invalid, 8 Unknown, 0 Unchecked, 16.7s Time] [2023-11-23 08:52:45,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-23 08:52:45,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 206. [2023-11-23 08:52:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 131 states have internal predecessors, (163), 60 states have call successors, (60), 17 states have call predecessors, (60), 16 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-23 08:52:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 282 transitions. [2023-11-23 08:52:45,195 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 282 transitions. Word has length 110 [2023-11-23 08:52:45,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:52:45,197 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 282 transitions. [2023-11-23 08:52:45,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 08:52:45,197 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 282 transitions. [2023-11-23 08:52:45,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 08:52:45,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:52:45,199 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:52:45,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:52:45,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:52:45,412 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:52:45,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:52:45,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1753595285, now seen corresponding path program 1 times [2023-11-23 08:52:45,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:52:45,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942946527] [2023-11-23 08:52:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:52:45,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:52:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:52:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:52:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:52:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:52:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:52:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:52:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:52:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:52:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:52:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:52:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:52:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:52:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 08:52:45,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:52:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942946527] [2023-11-23 08:52:45,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942946527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:52:45,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015344160] [2023-11-23 08:52:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:52:45,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:52:45,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:52:45,672 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:52:45,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 08:52:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:45,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-23 08:52:45,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:52:45,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-23 08:52:45,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-23 08:52:45,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:52:45,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2023-11-23 08:52:45,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-11-23 08:52:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 08:52:46,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:52:46,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015344160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:52:46,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:52:46,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2023-11-23 08:52:46,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845075695] [2023-11-23 08:52:46,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:52:46,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:52:46,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:52:46,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:52:46,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:52:46,840 INFO L87 Difference]: Start difference. First operand 206 states and 282 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 08:52:47,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:52:47,848 INFO L93 Difference]: Finished difference Result 361 states and 484 transitions. [2023-11-23 08:52:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:52:47,849 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 110 [2023-11-23 08:52:47,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:52:47,851 INFO L225 Difference]: With dead ends: 361 [2023-11-23 08:52:47,851 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 08:52:47,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 125 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:52:47,853 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 83 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:52:47,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 857 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:52:47,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 08:52:47,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2023-11-23 08:52:47,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 133 states have (on average 1.255639097744361) internal successors, (167), 136 states have internal predecessors, (167), 60 states have call successors, (60), 17 states have call predecessors, (60), 17 states have return successors, (61), 57 states have call predecessors, (61), 59 states have call successors, (61) [2023-11-23 08:52:47,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 288 transitions. [2023-11-23 08:52:47,877 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 288 transitions. Word has length 110 [2023-11-23 08:52:47,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:52:47,878 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 288 transitions. [2023-11-23 08:52:47,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 08:52:47,878 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 288 transitions. [2023-11-23 08:52:47,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 08:52:47,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:52:47,881 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:52:47,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 08:52:48,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:52:48,094 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:52:48,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:52:48,094 INFO L85 PathProgramCache]: Analyzing trace with hash 437795567, now seen corresponding path program 1 times [2023-11-23 08:52:48,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:52:48,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057062801] [2023-11-23 08:52:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:52:48,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:52:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:52:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:52:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:52:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:52:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:52:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:52:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:52:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:52:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:52:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:52:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:52:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:52:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-23 08:52:48,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:52:48,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057062801] [2023-11-23 08:52:48,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057062801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:52:48,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427359313] [2023-11-23 08:52:48,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:52:48,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:52:48,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:52:48,299 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:52:48,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 08:52:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:52:48,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:52:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 08:52:48,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:52:48,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427359313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:52:48,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:52:48,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-11-23 08:52:48,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684137700] [2023-11-23 08:52:48,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:52:48,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:52:48,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:52:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:52:48,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:52:48,495 INFO L87 Difference]: Start difference. First operand 211 states and 288 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:52:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:52:48,591 INFO L93 Difference]: Finished difference Result 437 states and 600 transitions. [2023-11-23 08:52:48,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:52:48,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 110 [2023-11-23 08:52:48,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:52:48,593 INFO L225 Difference]: With dead ends: 437 [2023-11-23 08:52:48,594 INFO L226 Difference]: Without dead ends: 251 [2023-11-23 08:52:48,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:52:48,595 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 56 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:52:48,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 573 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:52:48,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-23 08:52:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 241. [2023-11-23 08:52:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 160 states have (on average 1.29375) internal successors, (207), 164 states have internal predecessors, (207), 62 states have call successors, (62), 17 states have call predecessors, (62), 18 states have return successors, (65), 59 states have call predecessors, (65), 61 states have call successors, (65) [2023-11-23 08:52:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 334 transitions. [2023-11-23 08:52:48,616 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 334 transitions. Word has length 110 [2023-11-23 08:52:48,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:52:48,616 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 334 transitions. [2023-11-23 08:52:48,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:52:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 334 transitions. [2023-11-23 08:52:48,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-23 08:52:48,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:52:48,618 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:52:48,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 08:52:48,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 08:52:48,833 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:52:48,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:52:48,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1526915551, now seen corresponding path program 1 times [2023-11-23 08:52:48,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:52:48,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092722534] [2023-11-23 08:52:48,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:52:48,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:52:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:52:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:52:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:52:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:52:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:52:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:48,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:52:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:52:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:52:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:52:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:52:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:52:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:49,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:52:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:49,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:52:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-23 08:52:49,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:52:49,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092722534] [2023-11-23 08:52:49,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092722534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:52:49,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241010331] [2023-11-23 08:52:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:52:49,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:52:49,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:52:49,058 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:52:49,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 08:52:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:49,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-23 08:52:49,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:52:49,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:52:49,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-23 08:52:49,378 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:52:49,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-23 08:52:49,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 08:52:49,397 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 08:52:49,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-23 08:52:49,438 INFO L349 Elim1Store]: treesize reduction 68, result has 9.3 percent of original size [2023-11-23 08:52:49,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 28 [2023-11-23 08:52:51,467 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_27| Int) (|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.offset_BEFORE_CALL_23| Int)) (let ((.cse1 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_27|))) (let ((.cse0 (select .cse1 |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.offset_BEFORE_CALL_23|))) (and (not (= .cse0 0)) (= .cse0 (select .cse1 (+ |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.offset_BEFORE_CALL_23| 24))) (not (= .cse0 |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_27|)))))) is different from true [2023-11-23 08:52:53,565 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_28| Int) (|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.offset_BEFORE_CALL_24| Int)) (let ((.cse0 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_28|))) (let ((.cse1 (select .cse0 |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.offset_BEFORE_CALL_24|))) (and (= (select .cse0 (+ |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.offset_BEFORE_CALL_24| 24)) .cse1) (not (= .cse1 0)) (not (= |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_28| .cse1)))))) is different from true [2023-11-23 08:52:55,633 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.offset_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_22| Int)) (let ((.cse1 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_22|))) (let ((.cse0 (select .cse1 |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.offset_BEFORE_CALL_19|))) (and (not (= .cse0 |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_22|)) (= (select .cse1 (+ |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.offset_BEFORE_CALL_19| 24)) .cse0) (not (= .cse0 0)))))) is different from true [2023-11-23 08:52:57,751 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_23| Int) (|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.offset_BEFORE_CALL_20| Int)) (let ((.cse0 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_23|))) (let ((.cse1 (select .cse0 |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.offset_BEFORE_CALL_20|))) (and (= (select .cse0 (+ |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.offset_BEFORE_CALL_20| 24)) .cse1) (not (= |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_23| .cse1)) (not (= 0 .cse1)))))) is different from true [2023-11-23 08:52:59,838 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_24| Int) (|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.offset_BEFORE_CALL_21| Int)) (let ((.cse1 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_24|))) (let ((.cse0 (select .cse1 |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.offset_BEFORE_CALL_21|))) (and (not (= .cse0 |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_24|)) (= .cse0 (select .cse1 (+ |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.offset_BEFORE_CALL_21| 24))) (not (= .cse0 0)))))) is different from true [2023-11-23 08:53:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 110 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 44 not checked. [2023-11-23 08:53:00,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:53:00,356 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:53:00,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 39 [2023-11-23 08:53:00,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:53:00,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 216 treesize of output 208 [2023-11-23 08:53:00,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 280 treesize of output 272 [2023-11-23 08:53:00,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-23 08:53:00,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-23 08:53:00,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-23 08:53:00,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-23 08:53:00,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:53:00,582 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 93 treesize of output 85 [2023-11-23 08:53:00,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241010331] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:53:00,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:53:00,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 16] total 21 [2023-11-23 08:53:00,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900645920] [2023-11-23 08:53:00,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:53:00,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-23 08:53:00,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:53:00,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-23 08:53:00,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=536, Unknown=5, NotChecked=250, Total=870 [2023-11-23 08:53:00,840 INFO L87 Difference]: Start difference. First operand 241 states and 334 transitions. Second operand has 21 states, 20 states have (on average 4.4) internal successors, (88), 19 states have internal predecessors, (88), 8 states have call successors, (31), 8 states have call predecessors, (31), 10 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2023-11-23 08:53:57,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:54:14,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:54:14,599 INFO L93 Difference]: Finished difference Result 466 states and 655 transitions. [2023-11-23 08:54:14,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-23 08:54:14,599 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.4) internal successors, (88), 19 states have internal predecessors, (88), 8 states have call successors, (31), 8 states have call predecessors, (31), 10 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) Word has length 111 [2023-11-23 08:54:14,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:54:14,601 INFO L225 Difference]: With dead ends: 466 [2023-11-23 08:54:14,601 INFO L226 Difference]: Without dead ends: 300 [2023-11-23 08:54:14,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 217 SyntacticMatches, 11 SemanticMatches, 45 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 81.4s TimeCoverageRelationStatistics Valid=220, Invalid=1506, Unknown=16, NotChecked=420, Total=2162 [2023-11-23 08:54:14,603 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 231 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 2408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1368 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:54:14,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1541 Invalid, 2408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 985 Invalid, 1 Unknown, 1368 Unchecked, 2.9s Time] [2023-11-23 08:54:14,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-23 08:54:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 278. [2023-11-23 08:54:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 186 states have (on average 1.2795698924731183) internal successors, (238), 192 states have internal predecessors, (238), 69 states have call successors, (69), 20 states have call predecessors, (69), 22 states have return successors, (76), 65 states have call predecessors, (76), 68 states have call successors, (76) [2023-11-23 08:54:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 383 transitions. [2023-11-23 08:54:14,623 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 383 transitions. Word has length 111 [2023-11-23 08:54:14,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:54:14,624 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 383 transitions. [2023-11-23 08:54:14,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.4) internal successors, (88), 19 states have internal predecessors, (88), 8 states have call successors, (31), 8 states have call predecessors, (31), 10 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2023-11-23 08:54:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 383 transitions. [2023-11-23 08:54:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 08:54:14,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:54:14,625 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:54:14,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 08:54:14,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:54:14,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:54:14,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:54:14,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1086442347, now seen corresponding path program 1 times [2023-11-23 08:54:14,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:54:14,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755139268] [2023-11-23 08:54:14,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:54:14,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:54:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:54:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:54:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:54:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:54:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:54:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:54:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:54:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:54:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:54:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:54:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:54:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:54:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-11-23 08:54:15,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:54:15,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755139268] [2023-11-23 08:54:15,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755139268] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:54:15,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437808690] [2023-11-23 08:54:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:54:15,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:54:15,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:54:15,237 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:54:15,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 08:54:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:15,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 08:54:15,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:54:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 08:54:15,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:54:15,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437808690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:54:15,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:54:15,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-23 08:54:15,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388393868] [2023-11-23 08:54:15,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:54:15,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:54:15,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:54:15,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:54:15,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:54:15,483 INFO L87 Difference]: Start difference. First operand 278 states and 383 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:54:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:54:15,662 INFO L93 Difference]: Finished difference Result 511 states and 707 transitions. [2023-11-23 08:54:15,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:54:15,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 112 [2023-11-23 08:54:15,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:54:15,664 INFO L225 Difference]: With dead ends: 511 [2023-11-23 08:54:15,664 INFO L226 Difference]: Without dead ends: 290 [2023-11-23 08:54:15,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:54:15,665 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 55 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:54:15,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 714 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:54:15,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-23 08:54:15,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 278. [2023-11-23 08:54:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 186 states have (on average 1.2741935483870968) internal successors, (237), 192 states have internal predecessors, (237), 69 states have call successors, (69), 20 states have call predecessors, (69), 22 states have return successors, (76), 65 states have call predecessors, (76), 68 states have call successors, (76) [2023-11-23 08:54:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 382 transitions. [2023-11-23 08:54:15,691 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 382 transitions. Word has length 112 [2023-11-23 08:54:15,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:54:15,691 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 382 transitions. [2023-11-23 08:54:15,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:54:15,691 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 382 transitions. [2023-11-23 08:54:15,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 08:54:15,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:54:15,693 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:54:15,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 08:54:15,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 08:54:15,906 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:54:15,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:54:15,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2014790050, now seen corresponding path program 1 times [2023-11-23 08:54:15,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:54:15,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042313945] [2023-11-23 08:54:15,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:54:15,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:54:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:54:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:54:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:54:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:54:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:54:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:54:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:54:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:54:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:54:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:54:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:54:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:54:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-23 08:54:16,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:54:16,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042313945] [2023-11-23 08:54:16,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042313945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:54:16,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257279118] [2023-11-23 08:54:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:54:16,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:54:16,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:54:16,112 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:54:16,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 08:54:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:16,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 08:54:16,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:54:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 08:54:16,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:54:16,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257279118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:54:16,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:54:16,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-23 08:54:16,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179927553] [2023-11-23 08:54:16,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:54:16,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:54:16,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:54:16,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:54:16,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:54:16,361 INFO L87 Difference]: Start difference. First operand 278 states and 382 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:54:16,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:54:16,657 INFO L93 Difference]: Finished difference Result 548 states and 763 transitions. [2023-11-23 08:54:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:54:16,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2023-11-23 08:54:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:54:16,661 INFO L225 Difference]: With dead ends: 548 [2023-11-23 08:54:16,661 INFO L226 Difference]: Without dead ends: 326 [2023-11-23 08:54:16,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:54:16,662 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 79 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:54:16,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 831 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:54:16,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-23 08:54:16,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 281. [2023-11-23 08:54:16,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 189 states have (on average 1.2804232804232805) internal successors, (242), 195 states have internal predecessors, (242), 69 states have call successors, (69), 20 states have call predecessors, (69), 22 states have return successors, (76), 65 states have call predecessors, (76), 68 states have call successors, (76) [2023-11-23 08:54:16,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 387 transitions. [2023-11-23 08:54:16,683 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 387 transitions. Word has length 114 [2023-11-23 08:54:16,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:54:16,684 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 387 transitions. [2023-11-23 08:54:16,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:54:16,684 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 387 transitions. [2023-11-23 08:54:16,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-23 08:54:16,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:54:16,685 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:54:16,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 08:54:16,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 08:54:16,898 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:54:16,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:54:16,898 INFO L85 PathProgramCache]: Analyzing trace with hash -990195456, now seen corresponding path program 1 times [2023-11-23 08:54:16,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:54:16,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902985472] [2023-11-23 08:54:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:54:16,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:54:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:54:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:54:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:54:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:54:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:54:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:54:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:54:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:54:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:54:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 08:54:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:54:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:54:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-23 08:54:17,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:54:17,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902985472] [2023-11-23 08:54:17,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902985472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:54:17,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943137328] [2023-11-23 08:54:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:54:17,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:54:17,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:54:17,102 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:54:17,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 08:54:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 08:54:17,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:54:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 08:54:17,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:54:17,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943137328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:54:17,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:54:17,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-23 08:54:17,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472278271] [2023-11-23 08:54:17,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:54:17,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 08:54:17,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:54:17,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 08:54:17,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:54:17,296 INFO L87 Difference]: Start difference. First operand 281 states and 387 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:54:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:54:17,347 INFO L93 Difference]: Finished difference Result 529 states and 749 transitions. [2023-11-23 08:54:17,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 08:54:17,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 115 [2023-11-23 08:54:17,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:54:17,348 INFO L225 Difference]: With dead ends: 529 [2023-11-23 08:54:17,349 INFO L226 Difference]: Without dead ends: 305 [2023-11-23 08:54:17,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:54:17,350 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 4 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:54:17,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 292 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 08:54:17,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-23 08:54:17,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 288. [2023-11-23 08:54:17,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 196 states have (on average 1.280612244897959) internal successors, (251), 202 states have internal predecessors, (251), 69 states have call successors, (69), 20 states have call predecessors, (69), 22 states have return successors, (76), 65 states have call predecessors, (76), 68 states have call successors, (76) [2023-11-23 08:54:17,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 396 transitions. [2023-11-23 08:54:17,372 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 396 transitions. Word has length 115 [2023-11-23 08:54:17,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:54:17,372 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 396 transitions. [2023-11-23 08:54:17,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:54:17,373 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 396 transitions. [2023-11-23 08:54:17,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 08:54:17,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:54:17,374 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:54:17,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 08:54:17,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 08:54:17,587 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:54:17,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:54:17,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2066103738, now seen corresponding path program 1 times [2023-11-23 08:54:17,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:54:17,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760605174] [2023-11-23 08:54:17,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:54:17,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:54:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:54:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:54:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:54:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:54:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:54:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:54:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:54:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:54:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:54:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:54:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:54:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:54:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:54:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 08:54:17,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:54:17,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760605174] [2023-11-23 08:54:17,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760605174] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:54:17,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145085860] [2023-11-23 08:54:17,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:54:17,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:54:17,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:54:17,853 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:54:17,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 08:54:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:18,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-23 08:54:18,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:54:18,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-11-23 08:54:18,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-11-23 08:54:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 08:54:20,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:54:26,942 INFO L349 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2023-11-23 08:54:26,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 88 [2023-11-23 08:54:26,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:54:26,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 104 [2023-11-23 08:54:26,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-11-23 08:54:27,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-23 08:54:27,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:54:27,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2023-11-23 08:54:27,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 08:54:27,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:54:27,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 115 [2023-11-23 08:54:27,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:54:27,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:54:27,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2023-11-23 08:54:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-23 08:54:27,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145085860] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 08:54:27,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:54:27,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7, 18] total 34 [2023-11-23 08:54:27,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519156155] [2023-11-23 08:54:27,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:54:27,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 08:54:27,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:54:27,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 08:54:27,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1010, Unknown=3, NotChecked=0, Total=1122 [2023-11-23 08:54:27,235 INFO L87 Difference]: Start difference. First operand 288 states and 396 transitions. Second operand has 15 states, 12 states have (on average 4.166666666666667) internal successors, (50), 13 states have internal predecessors, (50), 8 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-23 08:54:27,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:54:27,957 INFO L93 Difference]: Finished difference Result 442 states and 597 transitions. [2023-11-23 08:54:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:54:27,957 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.166666666666667) internal successors, (50), 13 states have internal predecessors, (50), 8 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 122 [2023-11-23 08:54:27,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:54:27,959 INFO L225 Difference]: With dead ends: 442 [2023-11-23 08:54:27,959 INFO L226 Difference]: Without dead ends: 189 [2023-11-23 08:54:27,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 234 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=132, Invalid=1271, Unknown=3, NotChecked=0, Total=1406 [2023-11-23 08:54:27,960 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 11 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:54:27,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1437 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:54:27,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-23 08:54:27,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-11-23 08:54:27,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 128 states have (on average 1.2734375) internal successors, (163), 132 states have internal predecessors, (163), 45 states have call successors, (45), 13 states have call predecessors, (45), 15 states have return successors, (50), 43 states have call predecessors, (50), 44 states have call successors, (50) [2023-11-23 08:54:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 258 transitions. [2023-11-23 08:54:27,970 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 258 transitions. Word has length 122 [2023-11-23 08:54:27,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:54:27,970 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 258 transitions. [2023-11-23 08:54:27,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.166666666666667) internal successors, (50), 13 states have internal predecessors, (50), 8 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-23 08:54:27,970 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 258 transitions. [2023-11-23 08:54:27,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 08:54:27,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:54:27,972 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 08:54:27,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 08:54:28,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 08:54:28,185 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:54:28,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:54:28,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1753447698, now seen corresponding path program 1 times [2023-11-23 08:54:28,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:54:28,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720245558] [2023-11-23 08:54:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:54:28,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:54:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:54:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:54:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:54:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:54:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:54:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:54:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:54:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:54:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:54:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:54:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:54:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:54:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:54:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:54:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 08:54:28,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:54:28,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720245558] [2023-11-23 08:54:28,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720245558] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:54:28,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938259728] [2023-11-23 08:54:28,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:54:28,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:54:28,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:54:28,927 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:54:28,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 08:54:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:54:29,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 114 conjunts are in the unsatisfiable core [2023-11-23 08:54:29,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:54:29,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:54:29,406 INFO L349 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2023-11-23 08:54:29,406 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 1 case distinctions, treesize of input 41 treesize of output 13 [2023-11-23 08:54:29,422 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-23 08:54:29,423 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 1 case distinctions, treesize of input 33 treesize of output 21 [2023-11-23 08:54:29,432 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 11 treesize of output 7 [2023-11-23 08:54:29,438 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 27 treesize of output 7 [2023-11-23 08:54:29,456 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 08:54:29,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-23 08:54:29,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:54:29,554 INFO L349 Elim1Store]: treesize reduction 127, result has 14.2 percent of original size [2023-11-23 08:54:29,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 163 treesize of output 92 [2023-11-23 08:54:29,569 INFO L349 Elim1Store]: treesize reduction 25, result has 34.2 percent of original size [2023-11-23 08:54:29,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 62 [2023-11-23 08:54:32,598 INFO L349 Elim1Store]: treesize reduction 316, result has 0.3 percent of original size [2023-11-23 08:54:32,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 19 case distinctions, treesize of input 190 treesize of output 1 [2023-11-23 08:54:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 110 proven. 17 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 08:54:32,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:54:37,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:54:37,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 798812 treesize of output 706821 [2023-11-23 08:55:23,827 WARN L293 SmtUtils]: Spent 46.78s on a formula simplification. DAG size of input: 685 DAG size of output: 688 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-23 08:55:25,965 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 08:55:30,611 INFO L349 Elim1Store]: treesize reduction 1488, result has 36.9 percent of original size [2023-11-23 08:55:30,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 22 new quantified variables, introduced 210 case distinctions, treesize of input 519429405 treesize of output 509706631 Killed by 15