./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_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_rend_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 ec13cd31cb83ba576938e580d51fea49ff46ac6b1d457f8e4c2fd8b2dcc85ee1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 07:18:15,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 07:18:15,883 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 07:18:15,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 07:18:15,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 07:18:15,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 07:18:15,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 07:18:15,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 07:18:15,917 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 07:18:15,917 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 07:18:15,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 07:18:15,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 07:18:15,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 07:18:15,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 07:18:15,919 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 07:18:15,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 07:18:15,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 07:18:15,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 07:18:15,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 07:18:15,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 07:18:15,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 07:18:15,919 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 07:18:15,919 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 07:18:15,920 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 07:18:15,920 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 07:18:15,920 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 07:18:15,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 07:18:15,920 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 07:18:15,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 07:18:15,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 07:18:15,920 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 07:18:15,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 07:18:15,921 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 07:18:15,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 07:18:15,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 07:18:15,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 07:18:15,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 07:18:15,921 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 07:18:15,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 07:18:15,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 07:18:15,921 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 -> ec13cd31cb83ba576938e580d51fea49ff46ac6b1d457f8e4c2fd8b2dcc85ee1 [2025-03-17 07:18:16,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 07:18:16,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 07:18:16,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 07:18:16,197 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 07:18:16,198 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 07:18:16,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2025-03-17 07:18:17,341 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e27d78d0/008bac3ccefe4a7bae9b877479afceb3/FLAG36973e360 [2025-03-17 07:18:17,876 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 07:18:17,876 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2025-03-17 07:18:17,905 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e27d78d0/008bac3ccefe4a7bae9b877479afceb3/FLAG36973e360 [2025-03-17 07:18:17,923 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e27d78d0/008bac3ccefe4a7bae9b877479afceb3 [2025-03-17 07:18:17,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 07:18:17,926 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 07:18:17,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 07:18:17,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 07:18:17,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 07:18:17,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:18:17" (1/1) ... [2025-03-17 07:18:17,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c14364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:17, skipping insertion in model container [2025-03-17 07:18:17,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:18:17" (1/1) ... [2025-03-17 07:18:18,005 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 07:18:18,267 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_rend_harness.i[4494,4507] [2025-03-17 07:18:18,274 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_rend_harness.i[4554,4567] [2025-03-17 07:18:18,919 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:18,919 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:18,920 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:18,920 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:18,921 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:18,931 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:18,931 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:18,933 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:18,933 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:18,934 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:18,935 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:18,936 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:18,936 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,273 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_rend_harness.i[150464,150477] [2025-03-17 07:18:19,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 07:18:19,289 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 07:18:19,301 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_rend_harness.i[4494,4507] [2025-03-17 07:18:19,302 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_rend_harness.i[4554,4567] [2025-03-17 07:18:19,344 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,348 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,348 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,349 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,349 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,360 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,361 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,362 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,362 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,363 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,363 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,364 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,364 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:19,436 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_rend_harness.i[150464,150477] [2025-03-17 07:18:19,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 07:18:19,574 INFO L204 MainTranslator]: Completed translation [2025-03-17 07:18:19,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19 WrapperNode [2025-03-17 07:18:19,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 07:18:19,577 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 07:18:19,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 07:18:19,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 07:18:19,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19" (1/1) ... [2025-03-17 07:18:19,621 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19" (1/1) ... [2025-03-17 07:18:19,653 INFO L138 Inliner]: procedures = 668, calls = 1038, calls flagged for inlining = 53, calls inlined = 6, statements flattened = 131 [2025-03-17 07:18:19,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 07:18:19,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 07:18:19,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 07:18:19,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 07:18:19,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19" (1/1) ... [2025-03-17 07:18:19,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19" (1/1) ... [2025-03-17 07:18:19,665 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19" (1/1) ... [2025-03-17 07:18:19,681 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 14, 5]. 67 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 6 writes are split as follows [0, 6, 0]. [2025-03-17 07:18:19,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19" (1/1) ... [2025-03-17 07:18:19,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19" (1/1) ... [2025-03-17 07:18:19,688 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19" (1/1) ... [2025-03-17 07:18:19,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19" (1/1) ... [2025-03-17 07:18:19,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19" (1/1) ... [2025-03-17 07:18:19,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19" (1/1) ... [2025-03-17 07:18:19,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 07:18:19,700 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 07:18:19,702 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 07:18:19,702 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 07:18:19,703 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19" (1/1) ... [2025-03-17 07:18:19,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 07:18:19,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:19,734 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 07:18:19,736 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 07:18:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 07:18:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 07:18:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 07:18:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2025-03-17 07:18:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2025-03-17 07:18:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 07:18:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2025-03-17 07:18:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2025-03-17 07:18:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 07:18:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 07:18:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 07:18:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 07:18:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 07:18:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 07:18:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 07:18:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 07:18:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 07:18:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 07:18:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 07:18:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 07:18:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 07:18:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 07:18:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 07:18:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-03-17 07:18:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-03-17 07:18:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 07:18:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 07:18:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 07:18:19,916 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 07:18:19,919 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 07:18:19,980 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 07:18:19,997 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-03-17 07:18:20,140 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4700: havoc #t~ret311#1; [2025-03-17 07:18:20,156 INFO L? ?]: Removed 46 outVars from TransFormulas that were not future-live. [2025-03-17 07:18:20,156 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 07:18:20,164 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 07:18:20,164 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 07:18:20,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:18:20 BoogieIcfgContainer [2025-03-17 07:18:20,165 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 07:18:20,167 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 07:18:20,167 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 07:18:20,170 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 07:18:20,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:18:17" (1/3) ... [2025-03-17 07:18:20,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e58fd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:18:20, skipping insertion in model container [2025-03-17 07:18:20,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:19" (2/3) ... [2025-03-17 07:18:20,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e58fd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:18:20, skipping insertion in model container [2025-03-17 07:18:20,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:18:20" (3/3) ... [2025-03-17 07:18:20,173 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rend_harness.i [2025-03-17 07:18:20,184 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 07:18:20,186 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_rend_harness.i that has 6 procedures, 62 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-17 07:18:20,224 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 07:18:20,236 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;@6e8930ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 07:18:20,236 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 07:18:20,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 43 states have internal predecessors, (57), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 07:18:20,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 07:18:20,246 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:20,247 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 07:18:20,247 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:20,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:20,251 INFO L85 PathProgramCache]: Analyzing trace with hash 340973796, now seen corresponding path program 1 times [2025-03-17 07:18:20,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:20,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921090340] [2025-03-17 07:18:20,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:20,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:20,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:20,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:20,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:20,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-03-17 07:18:20,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:20,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921090340] [2025-03-17 07:18:20,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921090340] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:20,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863927634] [2025-03-17 07:18:20,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:20,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:20,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:20,570 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 07:18:20,571 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 07:18:20,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:20,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:20,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:20,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:20,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 07:18:20,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-03-17 07:18:20,790 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:20,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863927634] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:20,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:20,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 07:18:20,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871862772] [2025-03-17 07:18:20,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:20,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 07:18:20,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:20,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 07:18:20,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 07:18:20,812 INFO L87 Difference]: Start difference. First operand has 62 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 43 states have internal predecessors, (57), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-17 07:18:20,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:20,830 INFO L93 Difference]: Finished difference Result 117 states and 165 transitions. [2025-03-17 07:18:20,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 07:18:20,832 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2025-03-17 07:18:20,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:20,836 INFO L225 Difference]: With dead ends: 117 [2025-03-17 07:18:20,837 INFO L226 Difference]: Without dead ends: 59 [2025-03-17 07:18:20,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 69 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 07:18:20,841 INFO L435 NwaCegarLoop]: 81 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, 81 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 07:18:20,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 07:18:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-03-17 07:18:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2025-03-17 07:18:20,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.325) internal successors, (53), 41 states have internal predecessors, (53), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 07:18:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2025-03-17 07:18:20,872 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 68 [2025-03-17 07:18:20,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:20,872 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2025-03-17 07:18:20,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-17 07:18:20,873 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2025-03-17 07:18:20,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 07:18:20,875 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:20,875 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 07:18:20,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 07:18:21,077 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 07:18:21,078 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:21,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:21,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2114816675, now seen corresponding path program 1 times [2025-03-17 07:18:21,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:21,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119394818] [2025-03-17 07:18:21,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:21,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:21,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:21,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:21,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:21,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-17 07:18:21,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:21,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119394818] [2025-03-17 07:18:21,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119394818] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:21,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935771323] [2025-03-17 07:18:21,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:21,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:21,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:21,815 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 07:18:21,832 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 07:18:21,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:22,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:22,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:22,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:22,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-03-17 07:18:22,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:22,157 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 07:18:22,169 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 07:18:22,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:22,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:22,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2025-03-17 07:18:22,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:22,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:22,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:22,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2025-03-17 07:18:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-17 07:18:22,964 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:22,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935771323] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:22,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:22,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2025-03-17 07:18:22,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207259371] [2025-03-17 07:18:22,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:22,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 07:18:22,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:22,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 07:18:22,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-17 07:18:22,966 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-17 07:18:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:23,439 INFO L93 Difference]: Finished difference Result 165 states and 225 transitions. [2025-03-17 07:18:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 07:18:23,440 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2025-03-17 07:18:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:23,442 INFO L225 Difference]: With dead ends: 165 [2025-03-17 07:18:23,442 INFO L226 Difference]: Without dead ends: 116 [2025-03-17 07:18:23,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-17 07:18:23,443 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 61 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:23,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 333 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 07:18:23,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-17 07:18:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2025-03-17 07:18:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 77 states have (on average 1.3506493506493507) internal successors, (104), 80 states have internal predecessors, (104), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2025-03-17 07:18:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 152 transitions. [2025-03-17 07:18:23,471 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 152 transitions. Word has length 68 [2025-03-17 07:18:23,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:23,471 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 152 transitions. [2025-03-17 07:18:23,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-17 07:18:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 152 transitions. [2025-03-17 07:18:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 07:18:23,476 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:23,477 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-17 07:18:23,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 07:18:23,677 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 07:18:23,679 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:23,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash -209211164, now seen corresponding path program 1 times [2025-03-17 07:18:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:23,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644454497] [2025-03-17 07:18:23,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:23,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:23,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:23,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:23,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:23,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-17 07:18:23,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:23,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644454497] [2025-03-17 07:18:23,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644454497] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:23,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78447209] [2025-03-17 07:18:23,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:23,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:23,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:23,992 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 07:18:24,001 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 07:18:24,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:24,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:24,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:24,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:24,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-17 07:18:24,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:24,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2025-03-17 07:18:24,191 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 19 [2025-03-17 07:18:24,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:24,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:24,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2025-03-17 07:18:24,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:24,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:24,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:24,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2025-03-17 07:18:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 07:18:25,151 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:25,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78447209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:25,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:25,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2025-03-17 07:18:25,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263668572] [2025-03-17 07:18:25,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:25,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 07:18:25,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:25,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 07:18:25,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-03-17 07:18:25,153 INFO L87 Difference]: Start difference. First operand 112 states and 152 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2025-03-17 07:18:25,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:25,785 INFO L93 Difference]: Finished difference Result 166 states and 223 transitions. [2025-03-17 07:18:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 07:18:25,787 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 68 [2025-03-17 07:18:25,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:25,788 INFO L225 Difference]: With dead ends: 166 [2025-03-17 07:18:25,789 INFO L226 Difference]: Without dead ends: 113 [2025-03-17 07:18:25,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2025-03-17 07:18:25,792 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 49 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:25,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 360 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 07:18:25,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-03-17 07:18:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2025-03-17 07:18:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 77 states have internal predecessors, (101), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 07:18:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 147 transitions. [2025-03-17 07:18:25,812 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 147 transitions. Word has length 68 [2025-03-17 07:18:25,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:25,812 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 147 transitions. [2025-03-17 07:18:25,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2025-03-17 07:18:25,815 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 147 transitions. [2025-03-17 07:18:25,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 07:18:25,816 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:25,816 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 07:18:25,825 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 07:18:26,016 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 07:18:26,017 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:26,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:26,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2023565124, now seen corresponding path program 1 times [2025-03-17 07:18:26,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:26,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840984473] [2025-03-17 07:18:26,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:26,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:26,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:26,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:26,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:26,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-17 07:18:26,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:26,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840984473] [2025-03-17 07:18:26,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840984473] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:26,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124093830] [2025-03-17 07:18:26,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:26,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:26,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:26,240 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 07:18:26,241 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 07:18:26,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:26,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:26,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:26,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:26,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-17 07:18:26,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:26,441 INFO L349 Elim1Store]: treesize reduction 50, result has 41.2 percent of original size [2025-03-17 07:18:26,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 104 [2025-03-17 07:18:26,467 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 07:18:26,489 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:18:26,490 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 1 [2025-03-17 07:18:26,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 26 [2025-03-17 07:18:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-17 07:18:28,203 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:28,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124093830] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:28,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:28,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2025-03-17 07:18:28,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305192270] [2025-03-17 07:18:28,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:28,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 07:18:28,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:28,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 07:18:28,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2025-03-17 07:18:28,205 INFO L87 Difference]: Start difference. First operand 109 states and 147 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-17 07:18:29,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:29,038 INFO L93 Difference]: Finished difference Result 178 states and 247 transitions. [2025-03-17 07:18:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 07:18:29,039 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2025-03-17 07:18:29,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:29,040 INFO L225 Difference]: With dead ends: 178 [2025-03-17 07:18:29,040 INFO L226 Difference]: Without dead ends: 115 [2025-03-17 07:18:29,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2025-03-17 07:18:29,042 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 87 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 28 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:29,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 416 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 236 Invalid, 4 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 07:18:29,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-03-17 07:18:29,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2025-03-17 07:18:29,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 79 states have internal predecessors, (103), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 07:18:29,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 149 transitions. [2025-03-17 07:18:29,059 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 149 transitions. Word has length 68 [2025-03-17 07:18:29,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:29,059 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 149 transitions. [2025-03-17 07:18:29,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-17 07:18:29,060 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 149 transitions. [2025-03-17 07:18:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 07:18:29,061 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:29,061 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 07:18:29,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 07:18:29,261 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 07:18:29,262 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:29,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash 230170533, now seen corresponding path program 1 times [2025-03-17 07:18:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:29,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971197493] [2025-03-17 07:18:29,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:29,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:29,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:29,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:29,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-17 07:18:29,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:29,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971197493] [2025-03-17 07:18:29,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971197493] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:29,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324433520] [2025-03-17 07:18:29,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:29,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:29,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:29,484 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 07:18:29,485 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 07:18:29,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:29,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:29,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:29,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:29,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-03-17 07:18:29,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:29,636 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 07:18:29,643 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 07:18:29,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:29,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:29,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:29,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2025-03-17 07:18:29,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:29,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:29,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:29,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2025-03-17 07:18:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-17 07:18:31,015 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:31,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324433520] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:31,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:31,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2025-03-17 07:18:31,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54964693] [2025-03-17 07:18:31,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:31,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 07:18:31,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:31,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 07:18:31,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2025-03-17 07:18:31,017 INFO L87 Difference]: Start difference. First operand 111 states and 149 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-17 07:18:31,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:31,854 INFO L93 Difference]: Finished difference Result 185 states and 255 transitions. [2025-03-17 07:18:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 07:18:31,857 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2025-03-17 07:18:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:31,858 INFO L225 Difference]: With dead ends: 185 [2025-03-17 07:18:31,858 INFO L226 Difference]: Without dead ends: 117 [2025-03-17 07:18:31,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2025-03-17 07:18:31,860 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 77 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:31,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 441 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 07:18:31,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-17 07:18:31,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2025-03-17 07:18:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 81 states have internal predecessors, (105), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 07:18:31,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 151 transitions. [2025-03-17 07:18:31,882 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 151 transitions. Word has length 68 [2025-03-17 07:18:31,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:31,882 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 151 transitions. [2025-03-17 07:18:31,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-17 07:18:31,882 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 151 transitions. [2025-03-17 07:18:31,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 07:18:31,883 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:31,883 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 07:18:31,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 07:18:32,087 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 07:18:32,087 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:32,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash -940145722, now seen corresponding path program 1 times [2025-03-17 07:18:32,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:32,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965779422] [2025-03-17 07:18:32,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:32,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:32,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:32,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:32,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:32,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-17 07:18:32,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:32,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965779422] [2025-03-17 07:18:32,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965779422] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:32,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903746299] [2025-03-17 07:18:32,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:32,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:32,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:32,292 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 07:18:32,293 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 07:18:32,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:32,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:32,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:32,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:32,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-17 07:18:32,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:32,445 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 07:18:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-17 07:18:32,721 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:32,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903746299] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:32,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:32,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2025-03-17 07:18:32,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559123624] [2025-03-17 07:18:32,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:32,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 07:18:32,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:32,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 07:18:32,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2025-03-17 07:18:32,722 INFO L87 Difference]: Start difference. First operand 113 states and 151 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-17 07:18:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:33,057 INFO L93 Difference]: Finished difference Result 193 states and 264 transitions. [2025-03-17 07:18:33,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 07:18:33,058 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2025-03-17 07:18:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:33,059 INFO L225 Difference]: With dead ends: 193 [2025-03-17 07:18:33,059 INFO L226 Difference]: Without dead ends: 119 [2025-03-17 07:18:33,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2025-03-17 07:18:33,060 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 80 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:33,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 433 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 07:18:33,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-03-17 07:18:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2025-03-17 07:18:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 81 states have (on average 1.3209876543209877) internal successors, (107), 83 states have internal predecessors, (107), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 07:18:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 153 transitions. [2025-03-17 07:18:33,086 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 153 transitions. Word has length 68 [2025-03-17 07:18:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:33,086 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 153 transitions. [2025-03-17 07:18:33,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-17 07:18:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 153 transitions. [2025-03-17 07:18:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 07:18:33,088 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:33,088 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 07:18:33,098 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 07:18:33,292 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 07:18:33,292 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:33,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash -332635225, now seen corresponding path program 1 times [2025-03-17 07:18:33,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:33,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483885278] [2025-03-17 07:18:33,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:33,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:33,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:33,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:33,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:33,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-17 07:18:33,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:33,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483885278] [2025-03-17 07:18:33,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483885278] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:33,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27759888] [2025-03-17 07:18:33,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:33,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:33,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:33,413 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 07:18:33,430 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 07:18:33,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 07:18:33,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 07:18:33,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:33,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:33,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 07:18:33,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:33,600 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-17 07:18:33,602 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:33,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27759888] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:33,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:33,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-03-17 07:18:33,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50641548] [2025-03-17 07:18:33,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:33,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 07:18:33,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:33,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 07:18:33,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-17 07:18:33,604 INFO L87 Difference]: Start difference. First operand 115 states and 153 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-17 07:18:33,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:33,653 INFO L93 Difference]: Finished difference Result 249 states and 340 transitions. [2025-03-17 07:18:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 07:18:33,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2025-03-17 07:18:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:33,656 INFO L225 Difference]: With dead ends: 249 [2025-03-17 07:18:33,656 INFO L226 Difference]: Without dead ends: 146 [2025-03-17 07:18:33,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-17 07:18:33,657 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 19 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:33,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 296 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 07:18:33,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-03-17 07:18:33,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2025-03-17 07:18:33,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 108 states have (on average 1.3518518518518519) internal successors, (146), 112 states have internal predecessors, (146), 26 states have call successors, (26), 9 states have call predecessors, (26), 11 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2025-03-17 07:18:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 200 transitions. [2025-03-17 07:18:33,681 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 200 transitions. Word has length 68 [2025-03-17 07:18:33,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:33,681 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 200 transitions. [2025-03-17 07:18:33,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-17 07:18:33,682 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 200 transitions. [2025-03-17 07:18:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-17 07:18:33,682 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:33,683 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 07:18:33,690 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 07:18:33,883 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 07:18:33,884 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:33,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:33,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1073750715, now seen corresponding path program 1 times [2025-03-17 07:18:33,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:33,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242727518] [2025-03-17 07:18:33,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:33,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:33,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-17 07:18:33,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-17 07:18:33,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:33,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-17 07:18:34,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:34,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242727518] [2025-03-17 07:18:34,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242727518] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:34,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442397851] [2025-03-17 07:18:34,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:34,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:34,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:34,107 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 07:18:34,125 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 07:18:34,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-17 07:18:34,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-17 07:18:34,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:34,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:34,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-17 07:18:34,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:34,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2025-03-17 07:18:34,363 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 19 [2025-03-17 07:18:34,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:34,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:34,400 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 35 treesize of output 40 [2025-03-17 07:18:34,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:34,406 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2025-03-17 07:18:34,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:34,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-03-17 07:18:34,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:34,417 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 27 treesize of output 20 [2025-03-17 07:18:34,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:34,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:34,449 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 38 treesize of output 35 [2025-03-17 07:18:34,453 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 24 treesize of output 13 [2025-03-17 07:18:34,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 07:18:34,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 40 [2025-03-17 07:18:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 07:18:35,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 07:18:35,460 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ 16 |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.offset|))) (and (forall ((v_ArrVal_589 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_589))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) .cse2) 0)) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_591 Int)) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 16))))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_591))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) .cse2) 0)))) is different from false [2025-03-17 07:18:35,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:18:35,472 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 92 [2025-03-17 07:18:35,492 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 8 treesize of output 6 [2025-03-17 07:18:35,516 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ 16 |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_14| Int)) (or (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_14| 1)) (forall ((v_ArrVal_589 (Array Int Int)) (v_ArrVal_581 Int)) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_581)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_14| v_ArrVal_589))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_14|))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) .cse2) 0)))) (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_14| Int)) (or (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_14| 1)) (forall ((v_arrayElimArr_5 (Array Int Int)) (v_subst_1 Int)) (or (forall ((v_ArrVal_585 Int) (v_ArrVal_591 Int)) (= (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_585)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_14| v_arrayElimArr_5))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_591))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) .cse2) 0)) (not (= (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 16) (select v_arrayElimArr_5 v_subst_1))))))))) is different from false [2025-03-17 07:18:35,532 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:18:35,533 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:18:35,594 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2025-03-17 07:18:35,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 179 treesize of output 208 [2025-03-17 07:18:35,604 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:18:35,605 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 07:18:35,657 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2025-03-17 07:18:35,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 209 treesize of output 238 [2025-03-17 07:18:35,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:18:35,687 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 268 treesize of output 266 [2025-03-17 07:18:35,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:18:35,702 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 225 treesize of output 222 [2025-03-17 07:18:35,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:18:35,721 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 302 treesize of output 302 [2025-03-17 07:18:35,735 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 269 treesize of output 257 [2025-03-17 07:18:35,936 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 8 treesize of output 4 [2025-03-17 07:18:36,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:18:36,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 101 treesize of output 103 [2025-03-17 07:18:36,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:18:36,101 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 32 treesize of output 32 [2025-03-17 07:18:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 1 not checked. [2025-03-17 07:18:36,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442397851] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 07:18:36,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 07:18:36,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 10] total 23 [2025-03-17 07:18:36,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697297157] [2025-03-17 07:18:36,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 07:18:36,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 07:18:36,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:36,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 07:18:36,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=364, Unknown=2, NotChecked=78, Total=506 [2025-03-17 07:18:36,138 INFO L87 Difference]: Start difference. First operand 146 states and 200 transitions. Second operand has 23 states, 20 states have (on average 4.65) internal successors, (93), 22 states have internal predecessors, (93), 9 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 9 states have call successors, (20) [2025-03-17 07:18:40,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:18:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:41,884 INFO L93 Difference]: Finished difference Result 294 states and 405 transitions. [2025-03-17 07:18:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-17 07:18:41,885 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.65) internal successors, (93), 22 states have internal predecessors, (93), 9 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 9 states have call successors, (20) Word has length 69 [2025-03-17 07:18:41,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:41,886 INFO L225 Difference]: With dead ends: 294 [2025-03-17 07:18:41,886 INFO L226 Difference]: Without dead ends: 160 [2025-03-17 07:18:41,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=152, Invalid=976, Unknown=2, NotChecked=130, Total=1260 [2025-03-17 07:18:41,887 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 73 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 266 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:41,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1070 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 552 Invalid, 1 Unknown, 266 Unchecked, 5.0s Time] [2025-03-17 07:18:41,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2025-03-17 07:18:41,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2025-03-17 07:18:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 123 states have internal predecessors, (154), 26 states have call successors, (26), 10 states have call predecessors, (26), 15 states have return successors, (33), 24 states have call predecessors, (33), 24 states have call successors, (33) [2025-03-17 07:18:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 213 transitions. [2025-03-17 07:18:41,905 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 213 transitions. Word has length 69 [2025-03-17 07:18:41,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:41,905 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 213 transitions. [2025-03-17 07:18:41,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.65) internal successors, (93), 22 states have internal predecessors, (93), 9 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 9 states have call successors, (20) [2025-03-17 07:18:41,905 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 213 transitions. [2025-03-17 07:18:41,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-17 07:18:41,906 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:41,906 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 07:18:41,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 07:18:42,107 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 07:18:42,107 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:42,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:42,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1501477860, now seen corresponding path program 1 times [2025-03-17 07:18:42,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:42,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838909972] [2025-03-17 07:18:42,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:42,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:42,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-17 07:18:42,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-17 07:18:42,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:42,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-17 07:18:42,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:42,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838909972] [2025-03-17 07:18:42,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838909972] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:42,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420446320] [2025-03-17 07:18:42,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:42,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:42,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:42,347 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 07:18:42,349 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 07:18:42,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-17 07:18:42,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-17 07:18:42,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:42,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:42,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 07:18:42,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 07:18:42,628 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:42,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420446320] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:42,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:42,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-17 07:18:42,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616883756] [2025-03-17 07:18:42,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:42,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 07:18:42,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:42,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 07:18:42,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-17 07:18:42,630 INFO L87 Difference]: Start difference. First operand 158 states and 213 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-17 07:18:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:42,773 INFO L93 Difference]: Finished difference Result 320 states and 433 transitions. [2025-03-17 07:18:42,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 07:18:42,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2025-03-17 07:18:42,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:42,775 INFO L225 Difference]: With dead ends: 320 [2025-03-17 07:18:42,775 INFO L226 Difference]: Without dead ends: 166 [2025-03-17 07:18:42,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2025-03-17 07:18:42,776 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 20 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:42,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 339 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 07:18:42,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-03-17 07:18:42,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 158. [2025-03-17 07:18:42,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 116 states have (on average 1.293103448275862) internal successors, (150), 123 states have internal predecessors, (150), 26 states have call successors, (26), 10 states have call predecessors, (26), 15 states have return successors, (33), 24 states have call predecessors, (33), 24 states have call successors, (33) [2025-03-17 07:18:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 209 transitions. [2025-03-17 07:18:42,801 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 209 transitions. Word has length 70 [2025-03-17 07:18:42,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:42,801 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 209 transitions. [2025-03-17 07:18:42,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-17 07:18:42,801 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 209 transitions. [2025-03-17 07:18:42,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-17 07:18:42,804 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:42,804 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 07:18:42,811 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 07:18:43,008 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 07:18:43,008 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:43,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:43,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1099337796, now seen corresponding path program 1 times [2025-03-17 07:18:43,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:43,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518009969] [2025-03-17 07:18:43,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:43,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:43,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-17 07:18:43,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-17 07:18:43,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:43,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-17 07:18:43,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:43,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518009969] [2025-03-17 07:18:43,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518009969] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:43,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001065060] [2025-03-17 07:18:43,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:43,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:43,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:43,280 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 07:18:43,281 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 07:18:43,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-17 07:18:43,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-17 07:18:43,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:43,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:43,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 07:18:43,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:43,589 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 07:18:43,589 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:43,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001065060] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:43,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:43,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2025-03-17 07:18:43,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274648454] [2025-03-17 07:18:43,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:43,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 07:18:43,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:43,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 07:18:43,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2025-03-17 07:18:43,590 INFO L87 Difference]: Start difference. First operand 158 states and 209 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-17 07:18:43,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:43,906 INFO L93 Difference]: Finished difference Result 344 states and 465 transitions. [2025-03-17 07:18:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 07:18:43,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2025-03-17 07:18:43,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:43,908 INFO L225 Difference]: With dead ends: 344 [2025-03-17 07:18:43,908 INFO L226 Difference]: Without dead ends: 186 [2025-03-17 07:18:43,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2025-03-17 07:18:43,909 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 29 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:43,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 382 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 07:18:43,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-03-17 07:18:43,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 162. [2025-03-17 07:18:43,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 120 states have (on average 1.2833333333333334) internal successors, (154), 127 states have internal predecessors, (154), 26 states have call successors, (26), 10 states have call predecessors, (26), 15 states have return successors, (33), 24 states have call predecessors, (33), 24 states have call successors, (33) [2025-03-17 07:18:43,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 213 transitions. [2025-03-17 07:18:43,941 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 213 transitions. Word has length 72 [2025-03-17 07:18:43,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:43,941 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 213 transitions. [2025-03-17 07:18:43,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-17 07:18:43,941 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 213 transitions. [2025-03-17 07:18:43,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-17 07:18:43,942 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:43,942 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 07:18:43,953 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 07:18:44,142 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 07:18:44,143 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:44,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:44,143 INFO L85 PathProgramCache]: Analyzing trace with hash -914476462, now seen corresponding path program 1 times [2025-03-17 07:18:44,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:44,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720416699] [2025-03-17 07:18:44,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:44,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:44,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-17 07:18:44,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-17 07:18:44,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:44,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-17 07:18:44,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:44,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720416699] [2025-03-17 07:18:44,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720416699] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:44,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829872739] [2025-03-17 07:18:44,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:44,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:44,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:44,370 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 07:18:44,371 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 07:18:44,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-17 07:18:44,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-17 07:18:44,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:44,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:44,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 07:18:44,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-17 07:18:44,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:44,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829872739] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:44,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:44,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2025-03-17 07:18:44,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121068041] [2025-03-17 07:18:44,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:44,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 07:18:44,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:44,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 07:18:44,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 07:18:44,549 INFO L87 Difference]: Start difference. First operand 162 states and 213 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-17 07:18:44,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:44,594 INFO L93 Difference]: Finished difference Result 324 states and 445 transitions. [2025-03-17 07:18:44,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 07:18:44,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2025-03-17 07:18:44,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:44,596 INFO L225 Difference]: With dead ends: 324 [2025-03-17 07:18:44,596 INFO L226 Difference]: Without dead ends: 178 [2025-03-17 07:18:44,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 07:18:44,597 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 2 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:44,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 07:18:44,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-03-17 07:18:44,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 166. [2025-03-17 07:18:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 124 states have (on average 1.2741935483870968) internal successors, (158), 131 states have internal predecessors, (158), 26 states have call successors, (26), 10 states have call predecessors, (26), 15 states have return successors, (33), 24 states have call predecessors, (33), 24 states have call successors, (33) [2025-03-17 07:18:44,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 217 transitions. [2025-03-17 07:18:44,620 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 217 transitions. Word has length 73 [2025-03-17 07:18:44,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:44,620 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 217 transitions. [2025-03-17 07:18:44,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-17 07:18:44,621 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 217 transitions. [2025-03-17 07:18:44,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-17 07:18:44,622 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:44,622 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 07:18:44,631 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 07:18:44,822 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 07:18:44,823 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:44,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:44,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2015321325, now seen corresponding path program 1 times [2025-03-17 07:18:44,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:44,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316709459] [2025-03-17 07:18:44,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:44,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:44,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-17 07:18:44,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-17 07:18:44,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:44,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:45,018 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-17 07:18:45,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:45,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316709459] [2025-03-17 07:18:45,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316709459] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:45,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28941596] [2025-03-17 07:18:45,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:45,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:45,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:45,020 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 07:18:45,022 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 07:18:45,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-17 07:18:45,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-17 07:18:45,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:45,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:45,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-03-17 07:18:45,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:45,250 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 28 treesize of output 36 [2025-03-17 07:18:45,256 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 07:18:45,262 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 37 [2025-03-17 07:18:45,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-17 07:18:45,294 INFO L349 Elim1Store]: treesize reduction 15, result has 50.0 percent of original size [2025-03-17 07:18:45,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 25 [2025-03-17 07:19:24,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:19:24,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 248 treesize of output 568 [2025-03-17 07:19:24,111 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 47 [2025-03-17 07:19:24,133 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 47 [2025-03-17 07:19:24,170 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-03-17 07:19:24,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 57 [2025-03-17 07:19:24,221 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-03-17 07:19:24,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 57 [2025-03-17 07:19:24,251 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 59 [2025-03-17 07:19:24,305 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2025-03-17 07:19:24,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 63 [2025-03-17 07:19:24,333 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 47 [2025-03-17 07:19:24,380 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-03-17 07:19:24,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 57 [2025-03-17 07:19:25,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:19:25,144 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 46 treesize of output 50 [2025-03-17 07:19:26,053 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 07:19:26,054 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 46 treesize of output 46