./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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 4c102a8320469121bebf24ca3406288a96f198533855b78a0cc2eda1e300f8b5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 07:17:12,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 07:17:12,640 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 07:17:12,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 07:17:12,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 07:17:12,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 07:17:12,670 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 07:17:12,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 07:17:12,670 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 07:17:12,670 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 07:17:12,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 07:17:12,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 07:17:12,670 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 07:17:12,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 07:17:12,671 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 07:17:12,671 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 07:17:12,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 07:17:12,672 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 07:17:12,672 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 07:17:12,672 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 07:17:12,672 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 07:17:12,672 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 07:17:12,673 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 07:17:12,673 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 07:17:12,673 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 07:17:12,673 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 07:17:12,673 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 07:17:12,673 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 07:17:12,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 07:17:12,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 07:17:12,674 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 07:17:12,674 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 07:17:12,674 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 07:17:12,674 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 07:17:12,674 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 07:17:12,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 07:17:12,674 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 07:17:12,674 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 07:17:12,674 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 07:17:12,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 07:17:12,674 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 4c102a8320469121bebf24ca3406288a96f198533855b78a0cc2eda1e300f8b5 [2025-03-17 07:17:12,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 07:17:12,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 07:17:12,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 07:17:12,923 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 07:17:12,923 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 07:17:12,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2025-03-17 07:17:14,197 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9a8bcfc4/5e46ab1f334544b38b4f098dea5d4eee/FLAG50ad608f7 [2025-03-17 07:17:14,649 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 07:17:14,649 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2025-03-17 07:17:14,681 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9a8bcfc4/5e46ab1f334544b38b4f098dea5d4eee/FLAG50ad608f7 [2025-03-17 07:17:14,751 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9a8bcfc4/5e46ab1f334544b38b4f098dea5d4eee [2025-03-17 07:17:14,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 07:17:14,754 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 07:17:14,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 07:17:14,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 07:17:14,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 07:17:14,758 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:17:14" (1/1) ... [2025-03-17 07:17:14,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407dfde3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:14, skipping insertion in model container [2025-03-17 07:17:14,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:17:14" (1/1) ... [2025-03-17 07:17:14,809 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 07:17:14,988 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2025-03-17 07:17:14,994 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2025-03-17 07:17:15,543 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,543 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,543 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,547 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,548 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,564 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,564 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,565 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,566 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,567 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,567 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,567 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,569 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,911 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[150656,150669] [2025-03-17 07:17:15,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 07:17:15,929 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 07:17:15,939 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2025-03-17 07:17:15,943 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2025-03-17 07:17:15,987 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,987 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,987 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,987 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,988 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:15,997 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:16,000 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:16,001 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:16,001 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:16,001 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:16,002 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:16,002 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:16,002 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:17:16,070 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[150656,150669] [2025-03-17 07:17:16,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 07:17:16,200 INFO L204 MainTranslator]: Completed translation [2025-03-17 07:17:16,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16 WrapperNode [2025-03-17 07:17:16,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 07:17:16,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 07:17:16,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 07:17:16,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 07:17:16,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16" (1/1) ... [2025-03-17 07:17:16,284 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16" (1/1) ... [2025-03-17 07:17:16,319 INFO L138 Inliner]: procedures = 668, calls = 1044, calls flagged for inlining = 53, calls inlined = 8, statements flattened = 219 [2025-03-17 07:17:16,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 07:17:16,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 07:17:16,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 07:17:16,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 07:17:16,328 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16" (1/1) ... [2025-03-17 07:17:16,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16" (1/1) ... [2025-03-17 07:17:16,331 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16" (1/1) ... [2025-03-17 07:17:16,354 INFO L175 MemorySlicer]: Split 43 memory accesses to 3 slices as follows [2, 36, 5]. 84 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 9 writes are split as follows [0, 9, 0]. [2025-03-17 07:17:16,354 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16" (1/1) ... [2025-03-17 07:17:16,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16" (1/1) ... [2025-03-17 07:17:16,373 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16" (1/1) ... [2025-03-17 07:17:16,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16" (1/1) ... [2025-03-17 07:17:16,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16" (1/1) ... [2025-03-17 07:17:16,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16" (1/1) ... [2025-03-17 07:17:16,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 07:17:16,389 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 07:17:16,389 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 07:17:16,389 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 07:17:16,390 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16" (1/1) ... [2025-03-17 07:17:16,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 07:17:16,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:17:16,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 07:17:16,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 07:17:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-03-17 07:17:16,435 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-03-17 07:17:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2025-03-17 07:17:16,435 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2025-03-17 07:17:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 07:17:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 07:17:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 07:17:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 07:17:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 07:17:16,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 07:17:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2025-03-17 07:17:16,437 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2025-03-17 07:17:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 07:17:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2025-03-17 07:17:16,437 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2025-03-17 07:17:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 07:17:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 07:17:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 07:17:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 07:17:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 07:17:16,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 07:17:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2025-03-17 07:17:16,438 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2025-03-17 07:17:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 07:17:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 07:17:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 07:17:16,438 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 07:17:16,438 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 07:17:16,438 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 07:17:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 07:17:16,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 07:17:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 07:17:16,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 07:17:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 07:17:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 07:17:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 07:17:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 07:17:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 07:17:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-03-17 07:17:16,440 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-03-17 07:17:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2025-03-17 07:17:16,440 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2025-03-17 07:17:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 07:17:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 07:17:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 07:17:16,657 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 07:17:16,660 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 07:17:16,716 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4729: havoc #t~mem317.base, #t~mem317.offset;havoc #t~short318;havoc #t~mem319.base, #t~mem319.offset;havoc #t~mem320.base, #t~mem320.offset;havoc #t~short321; [2025-03-17 07:17:16,753 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-03-17 07:17:16,791 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4718: havoc #t~mem312.base, #t~mem312.offset;havoc #t~short313;havoc #t~mem314.base, #t~mem314.offset;havoc #t~mem315.base, #t~mem315.offset;havoc #t~short316; [2025-03-17 07:17:16,971 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4700: havoc #t~ret311#1; [2025-03-17 07:17:16,977 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4685: havoc #t~mem302.base, #t~mem302.offset; [2025-03-17 07:17:17,031 INFO L? ?]: Removed 95 outVars from TransFormulas that were not future-live. [2025-03-17 07:17:17,032 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 07:17:17,042 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 07:17:17,044 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 07:17:17,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:17:17 BoogieIcfgContainer [2025-03-17 07:17:17,045 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 07:17:17,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 07:17:17,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 07:17:17,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 07:17:17,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:17:14" (1/3) ... [2025-03-17 07:17:17,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bad8684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:17:17, skipping insertion in model container [2025-03-17 07:17:17,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:17:16" (2/3) ... [2025-03-17 07:17:17,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bad8684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:17:17, skipping insertion in model container [2025-03-17 07:17:17,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:17:17" (3/3) ... [2025-03-17 07:17:17,052 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_back_harness.i [2025-03-17 07:17:17,063 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 07:17:17,064 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_pop_back_harness.i that has 13 procedures, 135 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2025-03-17 07:17:17,112 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 07:17:17,122 INFO L333 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, 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;@18f7417e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 07:17:17,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 07:17:17,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 80 states have internal predecessors, (103), 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) [2025-03-17 07:17:17,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-17 07:17:17,134 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:17:17,134 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:17:17,135 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:17:17,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:17:17,139 INFO L85 PathProgramCache]: Analyzing trace with hash -907516337, now seen corresponding path program 1 times [2025-03-17 07:17:17,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:17:17,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643725185] [2025-03-17 07:17:17,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:17,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:17:17,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-17 07:17:17,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-17 07:17:17,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:17,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2025-03-17 07:17:17,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:17:17,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643725185] [2025-03-17 07:17:17,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643725185] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:17:17,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979920790] [2025-03-17 07:17:17,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:17,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:17:17,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:17:17,469 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) [2025-03-17 07:17:17,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 07:17:17,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-17 07:17:17,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-17 07:17:17,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:17,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:17,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 07:17:17,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:17:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2025-03-17 07:17:17,708 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:17:17,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979920790] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:17:17,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:17:17,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 07:17:17,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016997699] [2025-03-17 07:17:17,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:17:17,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 07:17:17,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:17:17,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 07:17:17,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 07:17:17,733 INFO L87 Difference]: Start difference. First operand has 127 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 80 states have internal predecessors, (103), 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 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-17 07:17:17,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:17:17,766 INFO L93 Difference]: Finished difference Result 247 states and 370 transitions. [2025-03-17 07:17:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 07:17:17,768 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2025-03-17 07:17:17,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:17:17,776 INFO L225 Difference]: With dead ends: 247 [2025-03-17 07:17:17,777 INFO L226 Difference]: Without dead ends: 124 [2025-03-17 07:17:17,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 07:17:17,784 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 07:17:17,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 07:17:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-03-17 07:17:17,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2025-03-17 07:17:17,815 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) [2025-03-17 07:17:17,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions. [2025-03-17 07:17:17,820 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 170 transitions. Word has length 116 [2025-03-17 07:17:17,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:17:17,820 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 170 transitions. [2025-03-17 07:17:17,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-17 07:17:17,820 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 170 transitions. [2025-03-17 07:17:17,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-17 07:17:17,822 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:17:17,822 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:17:17,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 07:17:18,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 07:17:18,026 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:17:18,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:17:18,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1712317164, now seen corresponding path program 1 times [2025-03-17 07:17:18,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:17:18,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828629658] [2025-03-17 07:17:18,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:18,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:17:18,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-17 07:17:18,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-17 07:17:18,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:18,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2025-03-17 07:17:18,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:17:18,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828629658] [2025-03-17 07:17:18,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828629658] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:17:18,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982551042] [2025-03-17 07:17:18,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:18,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:17:18,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:17:18,761 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) [2025-03-17 07:17:18,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 07:17:18,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-17 07:17:18,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-17 07:17:18,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:18,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:18,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 76 conjuncts are in the unsatisfiable core [2025-03-17 07:17:18,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:17:19,117 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 [2025-03-17 07:17:19,126 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 [2025-03-17 07:17:19,809 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2025-03-17 07:17:19,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 13 [2025-03-17 07:17:19,817 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-03-17 07:17:19,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2025-03-17 07:17:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 109 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-17 07:17:19,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 07:17:20,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2025-03-17 07:17:20,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:17:20,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:17:20,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 35 [2025-03-17 07:17:20,425 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-03-17 07:17:20,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 24 [2025-03-17 07:17:20,435 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 [2025-03-17 07:17:20,439 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 [2025-03-17 07:17:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2025-03-17 07:17:20,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982551042] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 07:17:20,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 07:17:20,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 13] total 25 [2025-03-17 07:17:20,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193770586] [2025-03-17 07:17:20,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 07:17:20,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-17 07:17:20,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:17:20,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-17 07:17:20,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2025-03-17 07:17:20,508 INFO L87 Difference]: Start difference. First operand 124 states and 170 transitions. Second operand has 25 states, 20 states have (on average 4.1) internal successors, (82), 21 states have internal predecessors, (82), 14 states have call successors, (41), 4 states have call predecessors, (41), 8 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) [2025-03-17 07:17:21,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:17:21,244 INFO L93 Difference]: Finished difference Result 252 states and 347 transitions. [2025-03-17 07:17:21,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-17 07:17:21,244 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 4.1) internal successors, (82), 21 states have internal predecessors, (82), 14 states have call successors, (41), 4 states have call predecessors, (41), 8 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) Word has length 116 [2025-03-17 07:17:21,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:17:21,247 INFO L225 Difference]: With dead ends: 252 [2025-03-17 07:17:21,247 INFO L226 Difference]: Without dead ends: 127 [2025-03-17 07:17:21,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 209 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2025-03-17 07:17:21,249 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 5 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 07:17:21,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2370 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 07:17:21,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2025-03-17 07:17:21,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2025-03-17 07:17:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 80 states have internal predecessors, (99), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2025-03-17 07:17:21,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 176 transitions. [2025-03-17 07:17:21,262 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 176 transitions. Word has length 116 [2025-03-17 07:17:21,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:17:21,262 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 176 transitions. [2025-03-17 07:17:21,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 4.1) internal successors, (82), 21 states have internal predecessors, (82), 14 states have call successors, (41), 4 states have call predecessors, (41), 8 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) [2025-03-17 07:17:21,262 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 176 transitions. [2025-03-17 07:17:21,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-17 07:17:21,265 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:17:21,265 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:17:21,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 07:17:21,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-17 07:17:21,466 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:17:21,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:17:21,467 INFO L85 PathProgramCache]: Analyzing trace with hash -154415603, now seen corresponding path program 1 times [2025-03-17 07:17:21,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:17:21,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358351143] [2025-03-17 07:17:21,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:21,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:17:21,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-17 07:17:21,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-17 07:17:21,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:21,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2025-03-17 07:17:21,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:17:21,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358351143] [2025-03-17 07:17:21,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358351143] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:17:21,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641178125] [2025-03-17 07:17:21,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:21,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:17:21,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:17:21,730 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) [2025-03-17 07:17:21,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 07:17:21,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-17 07:17:21,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-17 07:17:21,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:21,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:21,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 07:17:21,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:17:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-03-17 07:17:22,016 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:17:22,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641178125] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:17:22,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:17:22,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-17 07:17:22,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970006309] [2025-03-17 07:17:22,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:17:22,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 07:17:22,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:17:22,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 07:17:22,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-17 07:17:22,020 INFO L87 Difference]: Start difference. First operand 127 states and 176 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2025-03-17 07:17:22,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:17:22,161 INFO L93 Difference]: Finished difference Result 242 states and 337 transitions. [2025-03-17 07:17:22,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 07:17:22,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 118 [2025-03-17 07:17:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:17:22,166 INFO L225 Difference]: With dead ends: 242 [2025-03-17 07:17:22,166 INFO L226 Difference]: Without dead ends: 132 [2025-03-17 07:17:22,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-03-17 07:17:22,167 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 41 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 07:17:22,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 831 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 07:17:22,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-03-17 07:17:22,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2025-03-17 07:17:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.2625) internal successors, (101), 83 states have internal predecessors, (101), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2025-03-17 07:17:22,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 180 transitions. [2025-03-17 07:17:22,189 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 180 transitions. Word has length 118 [2025-03-17 07:17:22,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:17:22,189 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 180 transitions. [2025-03-17 07:17:22,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2025-03-17 07:17:22,190 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 180 transitions. [2025-03-17 07:17:22,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-17 07:17:22,192 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:17:22,193 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:17:22,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 07:17:22,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:17:22,393 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:17:22,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:17:22,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1614013269, now seen corresponding path program 1 times [2025-03-17 07:17:22,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:17:22,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079591790] [2025-03-17 07:17:22,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:22,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:17:22,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-17 07:17:22,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-17 07:17:22,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:22,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2025-03-17 07:17:22,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:17:22,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079591790] [2025-03-17 07:17:22,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079591790] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:17:22,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444084903] [2025-03-17 07:17:22,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:22,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:17:22,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:17:22,608 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) [2025-03-17 07:17:22,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 07:17:22,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-17 07:17:22,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-17 07:17:22,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:22,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:22,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 07:17:22,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:17:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-03-17 07:17:22,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:17:22,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444084903] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:17:22,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:17:22,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2025-03-17 07:17:22,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967016325] [2025-03-17 07:17:22,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:17:22,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 07:17:22,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:17:22,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 07:17:22,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-03-17 07:17:22,867 INFO L87 Difference]: Start difference. First operand 130 states and 180 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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) [2025-03-17 07:17:23,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:17:23,035 INFO L93 Difference]: Finished difference Result 254 states and 355 transitions. [2025-03-17 07:17:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 07:17:23,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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 120 [2025-03-17 07:17:23,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:17:23,038 INFO L225 Difference]: With dead ends: 254 [2025-03-17 07:17:23,038 INFO L226 Difference]: Without dead ends: 141 [2025-03-17 07:17:23,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2025-03-17 07:17:23,039 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 50 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 07:17:23,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 967 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 07:17:23,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-03-17 07:17:23,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 132. [2025-03-17 07:17:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 85 states have internal predecessors, (104), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2025-03-17 07:17:23,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 183 transitions. [2025-03-17 07:17:23,062 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 183 transitions. Word has length 120 [2025-03-17 07:17:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:17:23,063 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 183 transitions. [2025-03-17 07:17:23,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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) [2025-03-17 07:17:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 183 transitions. [2025-03-17 07:17:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-17 07:17:23,064 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:17:23,064 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:17:23,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 07:17:23,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:17:23,268 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:17:23,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:17:23,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2053946752, now seen corresponding path program 1 times [2025-03-17 07:17:23,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:17:23,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641666500] [2025-03-17 07:17:23,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:23,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:17:23,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-17 07:17:23,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-17 07:17:23,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:23,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:23,569 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2025-03-17 07:17:23,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:17:23,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641666500] [2025-03-17 07:17:23,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641666500] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:17:23,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973132592] [2025-03-17 07:17:23,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:23,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:17:23,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:17:23,574 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) [2025-03-17 07:17:23,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 07:17:23,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-17 07:17:23,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-17 07:17:23,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:23,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:23,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 07:17:23,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:17:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-03-17 07:17:23,795 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:17:23,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973132592] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:17:23,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:17:23,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-17 07:17:23,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247205287] [2025-03-17 07:17:23,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:17:23,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 07:17:23,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:17:23,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 07:17:23,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 07:17:23,797 INFO L87 Difference]: Start difference. First operand 132 states and 183 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2025-03-17 07:17:23,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:17:23,817 INFO L93 Difference]: Finished difference Result 251 states and 354 transitions. [2025-03-17 07:17:23,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 07:17:23,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 121 [2025-03-17 07:17:23,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:17:23,819 INFO L225 Difference]: With dead ends: 251 [2025-03-17 07:17:23,819 INFO L226 Difference]: Without dead ends: 136 [2025-03-17 07:17:23,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 07:17:23,820 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 2 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 07:17:23,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 328 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 07:17:23,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-03-17 07:17:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2025-03-17 07:17:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 86 states have internal predecessors, (105), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2025-03-17 07:17:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 184 transitions. [2025-03-17 07:17:23,829 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 184 transitions. Word has length 121 [2025-03-17 07:17:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:17:23,829 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 184 transitions. [2025-03-17 07:17:23,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2025-03-17 07:17:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 184 transitions. [2025-03-17 07:17:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-03-17 07:17:23,831 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:17:23,831 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:17:23,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 07:17:24,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:17:24,032 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:17:24,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:17:24,032 INFO L85 PathProgramCache]: Analyzing trace with hash 506354207, now seen corresponding path program 1 times [2025-03-17 07:17:24,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:17:24,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95553067] [2025-03-17 07:17:24,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:24,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:17:24,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-17 07:17:24,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-17 07:17:24,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:24,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:24,393 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2025-03-17 07:17:24,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:17:24,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95553067] [2025-03-17 07:17:24,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95553067] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:17:24,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016236667] [2025-03-17 07:17:24,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:24,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:17:24,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:17:24,397 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) [2025-03-17 07:17:24,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 07:17:24,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-17 07:17:24,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-17 07:17:24,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:24,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:24,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-17 07:17:24,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:17:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-17 07:17:24,672 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:17:24,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016236667] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:17:24,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:17:24,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 11 [2025-03-17 07:17:24,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436277381] [2025-03-17 07:17:24,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:17:24,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 07:17:24,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:17:24,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 07:17:24,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-03-17 07:17:24,674 INFO L87 Difference]: Start difference. First operand 133 states and 184 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-17 07:17:24,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:17:24,823 INFO L93 Difference]: Finished difference Result 255 states and 355 transitions. [2025-03-17 07:17:24,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 07:17:24,823 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2025-03-17 07:17:24,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:17:24,825 INFO L225 Difference]: With dead ends: 255 [2025-03-17 07:17:24,826 INFO L226 Difference]: Without dead ends: 139 [2025-03-17 07:17:24,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-03-17 07:17:24,827 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 26 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 07:17:24,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1134 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 07:17:24,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-03-17 07:17:24,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 134. [2025-03-17 07:17:24,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 87 states have internal predecessors, (106), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2025-03-17 07:17:24,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 185 transitions. [2025-03-17 07:17:24,841 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 185 transitions. Word has length 129 [2025-03-17 07:17:24,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:17:24,842 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 185 transitions. [2025-03-17 07:17:24,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-17 07:17:24,842 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 185 transitions. [2025-03-17 07:17:24,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-17 07:17:24,843 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:17:24,843 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:17:24,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 07:17:25,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:17:25,044 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:17:25,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:17:25,045 INFO L85 PathProgramCache]: Analyzing trace with hash 904247973, now seen corresponding path program 1 times [2025-03-17 07:17:25,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:17:25,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805114557] [2025-03-17 07:17:25,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:25,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:17:25,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-17 07:17:25,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-17 07:17:25,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:25,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2025-03-17 07:17:25,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:17:25,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805114557] [2025-03-17 07:17:25,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805114557] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:17:25,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078688944] [2025-03-17 07:17:25,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:25,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:17:25,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:17:25,540 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) [2025-03-17 07:17:25,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 07:17:25,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-17 07:17:25,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-17 07:17:25,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:25,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:25,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 75 conjuncts are in the unsatisfiable core [2025-03-17 07:17:25,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:17:25,775 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 13 treesize of output 1 [2025-03-17 07:17:25,779 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 13 treesize of output 1 [2025-03-17 07:17:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 127 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-17 07:17:26,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 07:17:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2025-03-17 07:17:26,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078688944] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 07:17:26,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 07:17:26,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 17, 13] total 33 [2025-03-17 07:17:26,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269078409] [2025-03-17 07:17:26,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 07:17:26,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-17 07:17:26,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:17:26,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-17 07:17:26,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2025-03-17 07:17:26,816 INFO L87 Difference]: Start difference. First operand 134 states and 185 transitions. Second operand has 33 states, 31 states have (on average 4.354838709677419) internal successors, (135), 31 states have internal predecessors, (135), 12 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (34), 10 states have call predecessors, (34), 12 states have call successors, (34) [2025-03-17 07:17:29,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:17:29,894 INFO L93 Difference]: Finished difference Result 482 states and 708 transitions. [2025-03-17 07:17:29,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-03-17 07:17:29,895 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 4.354838709677419) internal successors, (135), 31 states have internal predecessors, (135), 12 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (34), 10 states have call predecessors, (34), 12 states have call successors, (34) Word has length 131 [2025-03-17 07:17:29,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:17:29,897 INFO L225 Difference]: With dead ends: 482 [2025-03-17 07:17:29,898 INFO L226 Difference]: Without dead ends: 359 [2025-03-17 07:17:29,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 248 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=590, Invalid=4812, Unknown=0, NotChecked=0, Total=5402 [2025-03-17 07:17:29,901 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 456 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 2942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-17 07:17:29,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 3264 Invalid, 2942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-17 07:17:29,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2025-03-17 07:17:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 296. [2025-03-17 07:17:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 203 states have (on average 1.3004926108374384) internal successors, (264), 208 states have internal predecessors, (264), 70 states have call successors, (70), 19 states have call predecessors, (70), 22 states have return successors, (84), 68 states have call predecessors, (84), 68 states have call successors, (84) [2025-03-17 07:17:29,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 418 transitions. [2025-03-17 07:17:29,940 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 418 transitions. Word has length 131 [2025-03-17 07:17:29,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:17:29,941 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 418 transitions. [2025-03-17 07:17:29,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 4.354838709677419) internal successors, (135), 31 states have internal predecessors, (135), 12 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (34), 10 states have call predecessors, (34), 12 states have call successors, (34) [2025-03-17 07:17:29,941 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 418 transitions. [2025-03-17 07:17:29,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-17 07:17:29,943 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:17:29,943 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 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, 1] [2025-03-17 07:17:29,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 07:17:30,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:17:30,144 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:17:30,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:17:30,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1526059056, now seen corresponding path program 1 times [2025-03-17 07:17:30,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:17:30,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59467420] [2025-03-17 07:17:30,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:30,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:17:30,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-17 07:17:30,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-17 07:17:30,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:30,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2025-03-17 07:17:31,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:17:31,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59467420] [2025-03-17 07:17:31,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59467420] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:17:31,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753750094] [2025-03-17 07:17:31,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:17:31,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:17:31,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:17:31,105 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) [2025-03-17 07:17:31,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 07:17:31,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-17 07:17:31,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-17 07:17:31,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:17:31,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:17:31,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 134 conjuncts are in the unsatisfiable core [2025-03-17 07:17:31,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:17:31,301 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 [2025-03-17 07:17:31,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2025-03-17 07:17:31,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:17:31,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-03-17 07:17:31,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:17:31,510 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 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 07:17:31,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:17:31,547 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 [2025-03-17 07:17:31,556 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 12 treesize of output 11 [2025-03-17 07:17:31,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:17:31,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:17:31,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2025-03-17 07:17:31,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2025-03-17 07:17:44,742 WARN L214 Elim1Store]: Array PQE input equivalent to false [2025-03-17 07:17:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 137 proven. 23 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-17 07:17:44,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 07:17:47,139 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:17:47,263 INFO L349 Elim1Store]: treesize reduction 223, result has 49.4 percent of original size [2025-03-17 07:17:47,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 1076 treesize of output 962 [2025-03-17 07:17:47,436 INFO L349 Elim1Store]: treesize reduction 26, result has 80.2 percent of original size [2025-03-17 07:17:47,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 1003 treesize of output 1047 [2025-03-17 07:17:47,473 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:17:47,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 852 treesize of output 728 [2025-03-17 07:17:47,903 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 28 treesize of output 4 [2025-03-17 07:17:48,119 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 28 treesize of output 4 [2025-03-17 07:17:48,135 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 28 treesize of output 4 [2025-03-17 07:17:48,159 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 28 treesize of output 4 [2025-03-17 07:17:48,180 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 28 treesize of output 4 [2025-03-17 07:17:51,985 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:17:51,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:17:51,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 55 [2025-03-17 07:17:52,205 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 [2025-03-17 07:17:52,282 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:17:52,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 73 [2025-03-17 07:17:52,295 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:17:52,304 INFO L349 Elim1Store]: treesize reduction 49, result has 7.5 percent of original size [2025-03-17 07:17:52,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 154 treesize of output 119 [2025-03-17 07:17:52,329 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:17:52,335 INFO L349 Elim1Store]: treesize reduction 107, result has 0.9 percent of original size [2025-03-17 07:17:52,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 154 treesize of output 1 [2025-03-17 07:17:52,343 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:17:52,382 INFO L349 Elim1Store]: treesize reduction 83, result has 23.1 percent of original size [2025-03-17 07:17:52,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 160 treesize of output 143 [2025-03-17 07:17:52,416 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:17:52,418 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2025-03-17 07:17:52,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 114 treesize of output 1 [2025-03-17 07:17:52,430 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:17:52,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 86 [2025-03-17 07:17:52,445 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:17:52,447 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2025-03-17 07:17:52,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 120 treesize of output 1 [2025-03-17 07:17:52,453 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:17:52,456 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2025-03-17 07:17:52,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 120 treesize of output 1 [2025-03-17 07:17:52,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:17:52,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 111 [2025-03-17 07:17:52,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:17:52,702 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 393 treesize of output 393 [2025-03-17 07:17:52,714 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 213 treesize of output 207 [2025-03-17 07:17:52,727 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 207 treesize of output 205 [2025-03-17 07:17:52,736 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 205 treesize of output 201 [2025-03-17 07:17:52,743 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 201 treesize of output 199 [2025-03-17 07:17:52,794 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 [2025-03-17 07:17:52,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:17:52,805 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 63 treesize of output 61 [2025-03-17 07:17:53,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753750094] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:17:53,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 07:17:53,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 27] total 38 [2025-03-17 07:17:53,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625472854] [2025-03-17 07:17:53,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 07:17:53,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-03-17 07:17:53,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:17:53,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-03-17 07:17:53,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=3322, Unknown=64, NotChecked=0, Total=3660 [2025-03-17 07:17:53,255 INFO L87 Difference]: Start difference. First operand 296 states and 418 transitions. Second operand has 38 states, 34 states have (on average 3.764705882352941) internal successors, (128), 33 states have internal predecessors, (128), 15 states have call successors, (33), 8 states have call predecessors, (33), 11 states have return successors, (32), 14 states have call predecessors, (32), 15 states have call successors, (32) [2025-03-17 07:18:06,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:18:18,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:18:31,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:18:37,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:37,084 INFO L93 Difference]: Finished difference Result 669 states and 923 transitions. [2025-03-17 07:18:37,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-17 07:18:37,085 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 3.764705882352941) internal successors, (128), 33 states have internal predecessors, (128), 15 states have call successors, (33), 8 states have call predecessors, (33), 11 states have return successors, (32), 14 states have call predecessors, (32), 15 states have call successors, (32) Word has length 132 [2025-03-17 07:18:37,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:37,089 INFO L225 Difference]: With dead ends: 669 [2025-03-17 07:18:37,089 INFO L226 Difference]: Without dead ends: 395 [2025-03-17 07:18:37,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 213 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 40.4s TimeCoverageRelationStatistics Valid=652, Invalid=7535, Unknown=185, NotChecked=0, Total=8372 [2025-03-17 07:18:37,093 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 283 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 73 mSolverCounterUnsat, 410 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 410 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:37,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 2255 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1744 Invalid, 410 Unknown, 0 Unchecked, 15.9s Time] [2025-03-17 07:18:37,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2025-03-17 07:18:37,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 365. [2025-03-17 07:18:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 259 states have (on average 1.274131274131274) internal successors, (330), 265 states have internal predecessors, (330), 74 states have call successors, (74), 27 states have call predecessors, (74), 31 states have return successors, (91), 72 states have call predecessors, (91), 72 states have call successors, (91) [2025-03-17 07:18:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 495 transitions. [2025-03-17 07:18:37,169 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 495 transitions. Word has length 132 [2025-03-17 07:18:37,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:37,169 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 495 transitions. [2025-03-17 07:18:37,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 3.764705882352941) internal successors, (128), 33 states have internal predecessors, (128), 15 states have call successors, (33), 8 states have call predecessors, (33), 11 states have return successors, (32), 14 states have call predecessors, (32), 15 states have call successors, (32) [2025-03-17 07:18:37,171 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 495 transitions. [2025-03-17 07:18:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-17 07:18:37,175 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:37,175 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:18:37,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 07:18:37,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-17 07:18:37,379 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:37,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:37,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1051506950, now seen corresponding path program 1 times [2025-03-17 07:18:37,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:37,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170101203] [2025-03-17 07:18:37,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:37,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:37,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-17 07:18:37,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-17 07:18:37,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:37,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:37,471 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-17 07:18:37,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:37,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170101203] [2025-03-17 07:18:37,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170101203] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:37,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335034566] [2025-03-17 07:18:37,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:37,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:37,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:37,474 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) [2025-03-17 07:18:37,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 07:18:37,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-17 07:18:37,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-17 07:18:37,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:37,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:37,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 07:18:37,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-03-17 07:18:37,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:37,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335034566] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:37,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:37,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-17 07:18:37,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877807580] [2025-03-17 07:18:37,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:37,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 07:18:37,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:37,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 07:18:37,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 07:18:37,676 INFO L87 Difference]: Start difference. First operand 365 states and 495 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 07:18:37,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:37,727 INFO L93 Difference]: Finished difference Result 673 states and 947 transitions. [2025-03-17 07:18:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 07:18:37,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2025-03-17 07:18:37,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:37,730 INFO L225 Difference]: With dead ends: 673 [2025-03-17 07:18:37,730 INFO L226 Difference]: Without dead ends: 368 [2025-03-17 07:18:37,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 07:18:37,734 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:37,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 498 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 07:18:37,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2025-03-17 07:18:37,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 365. [2025-03-17 07:18:37,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 259 states have (on average 1.2548262548262548) internal successors, (325), 265 states have internal predecessors, (325), 74 states have call successors, (74), 27 states have call predecessors, (74), 31 states have return successors, (91), 72 states have call predecessors, (91), 72 states have call successors, (91) [2025-03-17 07:18:37,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 490 transitions. [2025-03-17 07:18:37,781 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 490 transitions. Word has length 131 [2025-03-17 07:18:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:37,782 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 490 transitions. [2025-03-17 07:18:37,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 07:18:37,782 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 490 transitions. [2025-03-17 07:18:37,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-17 07:18:37,783 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:37,784 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:18:37,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 07:18:37,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:37,986 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:37,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:37,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1808671833, now seen corresponding path program 1 times [2025-03-17 07:18:37,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:37,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157971820] [2025-03-17 07:18:37,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:37,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:38,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-17 07:18:38,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-17 07:18:38,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:38,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2025-03-17 07:18:38,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:38,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157971820] [2025-03-17 07:18:38,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157971820] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:38,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712111358] [2025-03-17 07:18:38,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:38,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:38,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:38,062 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) [2025-03-17 07:18:38,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 07:18:38,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-17 07:18:38,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-17 07:18:38,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:38,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:38,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 07:18:38,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2025-03-17 07:18:38,257 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:38,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712111358] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:38,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:38,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-17 07:18:38,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74199522] [2025-03-17 07:18:38,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:38,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 07:18:38,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:38,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 07:18:38,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 07:18:38,259 INFO L87 Difference]: Start difference. First operand 365 states and 490 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 07:18:38,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:38,286 INFO L93 Difference]: Finished difference Result 516 states and 709 transitions. [2025-03-17 07:18:38,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 07:18:38,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2025-03-17 07:18:38,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:38,289 INFO L225 Difference]: With dead ends: 516 [2025-03-17 07:18:38,289 INFO L226 Difference]: Without dead ends: 198 [2025-03-17 07:18:38,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 07:18:38,290 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:38,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 499 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 07:18:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-03-17 07:18:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2025-03-17 07:18:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 133 states have (on average 1.1954887218045114) internal successors, (159), 136 states have internal predecessors, (159), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (47), 40 states have call predecessors, (47), 40 states have call successors, (47) [2025-03-17 07:18:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 247 transitions. [2025-03-17 07:18:38,306 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 247 transitions. Word has length 131 [2025-03-17 07:18:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:38,306 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 247 transitions. [2025-03-17 07:18:38,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 07:18:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 247 transitions. [2025-03-17 07:18:38,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-17 07:18:38,307 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:38,307 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:18:38,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 07:18:38,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-17 07:18:38,511 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:38,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:38,511 INFO L85 PathProgramCache]: Analyzing trace with hash 821768533, now seen corresponding path program 2 times [2025-03-17 07:18:38,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:38,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23399024] [2025-03-17 07:18:38,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 07:18:38,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:38,530 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 142 statements into 2 equivalence classes. [2025-03-17 07:18:38,544 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 142 of 142 statements. [2025-03-17 07:18:38,544 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 07:18:38,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2025-03-17 07:18:38,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:38,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23399024] [2025-03-17 07:18:38,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23399024] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:38,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885983051] [2025-03-17 07:18:38,932 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 07:18:38,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:38,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:38,935 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) [2025-03-17 07:18:38,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 07:18:39,087 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 142 statements into 2 equivalence classes. [2025-03-17 07:18:39,144 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 142 of 142 statements. [2025-03-17 07:18:39,144 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 07:18:39,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:39,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-03-17 07:18:39,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:39,176 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2025-03-17 07:18:39,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2025-03-17 07:18:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-03-17 07:18:39,371 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:39,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885983051] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:39,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:39,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2025-03-17 07:18:39,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511321831] [2025-03-17 07:18:39,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:39,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 07:18:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:39,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 07:18:39,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2025-03-17 07:18:39,372 INFO L87 Difference]: Start difference. First operand 195 states and 247 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 6 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2025-03-17 07:18:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:39,619 INFO L93 Difference]: Finished difference Result 328 states and 433 transitions. [2025-03-17 07:18:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 07:18:39,619 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 6 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 142 [2025-03-17 07:18:39,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:39,621 INFO L225 Difference]: With dead ends: 328 [2025-03-17 07:18:39,621 INFO L226 Difference]: Without dead ends: 202 [2025-03-17 07:18:39,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2025-03-17 07:18:39,622 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 27 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:39,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1279 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 07:18:39,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-03-17 07:18:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 195. [2025-03-17 07:18:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 133 states have (on average 1.1954887218045114) internal successors, (159), 136 states have internal predecessors, (159), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (47), 40 states have call predecessors, (47), 40 states have call successors, (47) [2025-03-17 07:18:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 247 transitions. [2025-03-17 07:18:39,654 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 247 transitions. Word has length 142 [2025-03-17 07:18:39,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:39,654 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 247 transitions. [2025-03-17 07:18:39,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 6 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2025-03-17 07:18:39,654 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 247 transitions. [2025-03-17 07:18:39,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-17 07:18:39,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:39,656 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:18:39,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-17 07:18:39,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-17 07:18:39,860 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:39,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:39,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1030803584, now seen corresponding path program 2 times [2025-03-17 07:18:39,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:39,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822738341] [2025-03-17 07:18:39,861 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 07:18:39,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:39,881 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 143 statements into 2 equivalence classes. [2025-03-17 07:18:39,907 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 143 of 143 statements. [2025-03-17 07:18:39,908 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 07:18:39,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-17 07:18:40,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:40,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822738341] [2025-03-17 07:18:40,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822738341] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:40,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080219126] [2025-03-17 07:18:40,222 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 07:18:40,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:40,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:40,225 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) [2025-03-17 07:18:40,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 07:18:40,381 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 143 statements into 2 equivalence classes. [2025-03-17 07:18:40,446 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 143 of 143 statements. [2025-03-17 07:18:40,447 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 07:18:40,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:40,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 84 conjuncts are in the unsatisfiable core [2025-03-17 07:18:40,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:40,464 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 [2025-03-17 07:18:40,579 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 [2025-03-17 07:18:40,587 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 [2025-03-17 07:18:40,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2025-03-17 07:18:40,646 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-03-17 07:18:40,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2025-03-17 07:18:40,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2025-03-17 07:18:40,669 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 07:18:40,669 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 [2025-03-17 07:18:40,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2025-03-17 07:18:40,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2025-03-17 07:18:40,769 INFO L349 Elim1Store]: treesize reduction 96, result has 23.2 percent of original size [2025-03-17 07:18:40,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 99 treesize of output 70 [2025-03-17 07:18:40,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:40,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2025-03-17 07:18:40,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31