./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_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 f26a5d85d152e590b5f8a93f229efbb28bdd5e77c34d7106bb5825fc4b732cf6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:51:25,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:51:25,559 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 12:51:25,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:51:25,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:51:25,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:51:25,599 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:51:25,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:51:25,600 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:51:25,601 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:51:25,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:51:25,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:51:25,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:51:25,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:51:25,604 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:51:25,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:51:25,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:51:25,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:51:25,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:51:25,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:51:25,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:51:25,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:51:25,610 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:51:25,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:51:25,611 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:51:25,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:51:25,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:51:25,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:51:25,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:51:25,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:51:25,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:51:25,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:51:25,612 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:51:25,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:51:25,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:51:25,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:51:25,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:51:25,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:51:25,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:51:25,614 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f26a5d85d152e590b5f8a93f229efbb28bdd5e77c34d7106bb5825fc4b732cf6 [2024-10-24 12:51:25,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:51:25,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:51:25,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:51:25,882 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:51:25,883 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:51:25,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i [2024-10-24 12:51:27,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:51:27,804 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:51:27,805 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i [2024-10-24 12:51:27,849 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3aa3a37d/7dce27510a424163be3ef91d633b1694/FLAG7684a0162 [2024-10-24 12:51:27,866 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3aa3a37d/7dce27510a424163be3ef91d633b1694 [2024-10-24 12:51:27,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:51:27,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:51:27,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:51:27,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:51:27,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:51:27,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:51:27" (1/1) ... [2024-10-24 12:51:27,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488441a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:27, skipping insertion in model container [2024-10-24 12:51:27,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:51:27" (1/1) ... [2024-10-24 12:51:27,998 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:51:28,344 WARN L248 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_byte_cursor_advance_harness.i[4497,4510] [2024-10-24 12:51:28,351 WARN L248 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_byte_cursor_advance_harness.i[4557,4570] [2024-10-24 12:51:28,943 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:28,944 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:28,944 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:28,945 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:28,950 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:28,968 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:28,969 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:28,972 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:28,973 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,498 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,499 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:51:29,618 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:51:29,634 WARN L248 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_byte_cursor_advance_harness.i[4497,4510] [2024-10-24 12:51:29,642 WARN L248 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_byte_cursor_advance_harness.i[4557,4570] [2024-10-24 12:51:29,746 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,750 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,752 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,753 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,754 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,764 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,764 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,765 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,766 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,893 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2024-10-24 12:51:29,896 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,896 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:51:29,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2024-10-24 12:51:29,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:51:30,145 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:51:30,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30 WrapperNode [2024-10-24 12:51:30,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:51:30,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:51:30,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:51:30,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:51:30,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30" (1/1) ... [2024-10-24 12:51:30,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30" (1/1) ... [2024-10-24 12:51:30,296 INFO L138 Inliner]: procedures = 679, calls = 2624, calls flagged for inlining = 60, calls inlined = 7, statements flattened = 881 [2024-10-24 12:51:30,296 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:51:30,297 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:51:30,297 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:51:30,297 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:51:30,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30" (1/1) ... [2024-10-24 12:51:30,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30" (1/1) ... [2024-10-24 12:51:30,318 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30" (1/1) ... [2024-10-24 12:51:30,394 INFO L175 MemorySlicer]: Split 552 memory accesses to 7 slices as follows [2, 256, 6, 238, 8, 37, 5]. 46 percent of accesses are in the largest equivalence class. The 505 initializations are split as follows [2, 256, 0, 236, 2, 4, 5]. The 9 writes are split as follows [0, 0, 2, 0, 0, 7, 0]. [2024-10-24 12:51:30,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30" (1/1) ... [2024-10-24 12:51:30,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30" (1/1) ... [2024-10-24 12:51:30,422 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30" (1/1) ... [2024-10-24 12:51:30,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30" (1/1) ... [2024-10-24 12:51:30,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30" (1/1) ... [2024-10-24 12:51:30,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30" (1/1) ... [2024-10-24 12:51:30,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:51:30,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:51:30,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:51:30,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:51:30,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30" (1/1) ... [2024-10-24 12:51:30,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:51:30,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:51:30,499 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) [2024-10-24 12:51:30,507 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 [2024-10-24 12:51:30,547 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-10-24 12:51:30,547 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-10-24 12:51:30,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:51:30,547 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-10-24 12:51:30,547 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-10-24 12:51:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:51:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:51:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:51:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 12:51:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 12:51:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-24 12:51:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-24 12:51:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 12:51:30,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 12:51:30,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:51:30,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:51:30,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 12:51:30,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 12:51:30,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 12:51:30,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 12:51:30,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-24 12:51:30,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-24 12:51:30,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-10-24 12:51:30,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:51:30,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:51:30,550 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-10-24 12:51:30,550 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-10-24 12:51:30,551 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-10-24 12:51:30,551 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-10-24 12:51:30,551 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 12:51:30,551 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 12:51:30,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:51:30,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 12:51:30,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 12:51:30,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 12:51:30,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 12:51:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-24 12:51:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-24 12:51:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-10-24 12:51:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-24 12:51:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-24 12:51:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-24 12:51:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-24 12:51:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-10-24 12:51:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-10-24 12:51:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-10-24 12:51:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:51:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:51:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:51:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 12:51:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 12:51:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 12:51:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-24 12:51:30,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:51:30,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:51:30,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:51:30,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 12:51:30,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 12:51:30,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 12:51:30,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-24 12:51:30,898 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:51:30,901 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:51:31,783 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-10-24 12:51:31,784 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:51:31,930 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:51:31,931 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 12:51:31,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:51:31 BoogieIcfgContainer [2024-10-24 12:51:31,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:51:31,936 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:51:31,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:51:31,940 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:51:31,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:51:27" (1/3) ... [2024-10-24 12:51:31,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e3af29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:51:31, skipping insertion in model container [2024-10-24 12:51:31,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:51:30" (2/3) ... [2024-10-24 12:51:31,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e3af29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:51:31, skipping insertion in model container [2024-10-24 12:51:31,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:51:31" (3/3) ... [2024-10-24 12:51:31,944 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_advance_harness.i [2024-10-24 12:51:31,960 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:51:31,961 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:51:32,030 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:51:32,040 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;@45ded0af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:51:32,041 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 12:51:32,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 50 states have (on average 1.32) internal successors, (66), 51 states have internal predecessors, (66), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-24 12:51:32,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-24 12:51:32,054 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:51:32,055 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 12:51:32,056 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:51:32,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:51:32,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1423192504, now seen corresponding path program 1 times [2024-10-24 12:51:32,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:51:32,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142582606] [2024-10-24 12:51:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:32,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:51:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:33,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:51:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:33,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:51:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:33,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 12:51:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:33,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:51:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:33,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 12:51:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:33,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:51:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 12:51:33,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:51:33,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142582606] [2024-10-24 12:51:33,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142582606] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:51:33,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087234591] [2024-10-24 12:51:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:33,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:51:33,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:51:33,242 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) [2024-10-24 12:51:33,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:51:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:33,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 2482 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-24 12:51:33,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:51:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 12:51:33,870 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:51:33,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087234591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:51:33,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:51:33,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-10-24 12:51:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96531955] [2024-10-24 12:51:33,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:51:33,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 12:51:33,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:51:33,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 12:51:33,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:51:33,906 INFO L87 Difference]: Start difference. First operand has 80 states, 50 states have (on average 1.32) internal successors, (66), 51 states have internal predecessors, (66), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 12:51:34,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:51:34,048 INFO L93 Difference]: Finished difference Result 152 states and 225 transitions. [2024-10-24 12:51:34,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 12:51:34,054 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2024-10-24 12:51:34,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:51:34,062 INFO L225 Difference]: With dead ends: 152 [2024-10-24 12:51:34,062 INFO L226 Difference]: Without dead ends: 73 [2024-10-24 12:51:34,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:51:34,071 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 12:51:34,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 12:51:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-24 12:51:34,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-24 12:51:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 47 states have internal predecessors, (57), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-24 12:51:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 98 transitions. [2024-10-24 12:51:34,108 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 98 transitions. Word has length 41 [2024-10-24 12:51:34,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:51:34,110 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 98 transitions. [2024-10-24 12:51:34,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 12:51:34,110 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 98 transitions. [2024-10-24 12:51:34,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-24 12:51:34,112 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:51:34,112 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 12:51:34,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 12:51:34,313 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 [2024-10-24 12:51:34,313 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:51:34,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:51:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1082438024, now seen corresponding path program 1 times [2024-10-24 12:51:34,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:51:34,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017045928] [2024-10-24 12:51:34,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:34,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:51:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:34,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:51:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:34,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:51:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:34,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 12:51:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:34,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:51:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:34,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 12:51:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:34,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:51:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 12:51:34,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:51:34,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017045928] [2024-10-24 12:51:34,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017045928] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:51:34,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699661444] [2024-10-24 12:51:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:34,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:51:34,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:51:34,929 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) [2024-10-24 12:51:34,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:51:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:35,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 2482 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 12:51:35,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:51:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 12:51:35,501 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:51:35,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699661444] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:51:35,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:51:35,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-24 12:51:35,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503820741] [2024-10-24 12:51:35,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:51:35,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:51:35,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:51:35,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:51:35,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:51:35,506 INFO L87 Difference]: Start difference. First operand 73 states and 98 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 12:51:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:51:35,651 INFO L93 Difference]: Finished difference Result 119 states and 161 transitions. [2024-10-24 12:51:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:51:35,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2024-10-24 12:51:35,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:51:35,654 INFO L225 Difference]: With dead ends: 119 [2024-10-24 12:51:35,655 INFO L226 Difference]: Without dead ends: 74 [2024-10-24 12:51:35,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:51:35,658 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 12:51:35,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 175 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 12:51:35,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-10-24 12:51:35,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-10-24 12:51:35,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 48 states have internal predecessors, (58), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-24 12:51:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 99 transitions. [2024-10-24 12:51:35,676 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 99 transitions. Word has length 41 [2024-10-24 12:51:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:51:35,677 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 99 transitions. [2024-10-24 12:51:35,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 12:51:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 99 transitions. [2024-10-24 12:51:35,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-24 12:51:35,679 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:51:35,679 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 12:51:35,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:51:35,879 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 [2024-10-24 12:51:35,880 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:51:35,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:51:35,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1475465034, now seen corresponding path program 1 times [2024-10-24 12:51:35,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:51:35,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075320812] [2024-10-24 12:51:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:35,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:51:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:36,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:51:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:36,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:51:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:36,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 12:51:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:36,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:51:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:36,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 12:51:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:36,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:51:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 12:51:36,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:51:36,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075320812] [2024-10-24 12:51:36,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075320812] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:51:36,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198666082] [2024-10-24 12:51:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:36,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:51:36,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:51:36,343 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) [2024-10-24 12:51:36,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 12:51:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:36,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:51:36,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:51:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 12:51:36,965 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:51:36,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198666082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:51:36,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:51:36,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-10-24 12:51:36,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879833336] [2024-10-24 12:51:36,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:51:36,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:51:36,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:51:36,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:51:36,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:51:36,967 INFO L87 Difference]: Start difference. First operand 74 states and 99 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 12:51:37,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:51:37,151 INFO L93 Difference]: Finished difference Result 137 states and 188 transitions. [2024-10-24 12:51:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:51:37,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2024-10-24 12:51:37,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:51:37,154 INFO L225 Difference]: With dead ends: 137 [2024-10-24 12:51:37,154 INFO L226 Difference]: Without dead ends: 76 [2024-10-24 12:51:37,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:51:37,156 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 25 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:51:37,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 200 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 12:51:37,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-24 12:51:37,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-10-24 12:51:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 50 states have internal predecessors, (59), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2024-10-24 12:51:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 104 transitions. [2024-10-24 12:51:37,171 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 104 transitions. Word has length 41 [2024-10-24 12:51:37,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:51:37,172 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 104 transitions. [2024-10-24 12:51:37,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 12:51:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 104 transitions. [2024-10-24 12:51:37,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-24 12:51:37,173 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:51:37,174 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:51:37,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 12:51:37,374 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 [2024-10-24 12:51:37,374 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:51:37,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:51:37,375 INFO L85 PathProgramCache]: Analyzing trace with hash -901738171, now seen corresponding path program 1 times [2024-10-24 12:51:37,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:51:37,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380972942] [2024-10-24 12:51:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:37,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:51:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:37,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:51:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:37,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:51:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:37,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 12:51:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:37,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 12:51:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:37,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:51:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:37,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 12:51:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 12:51:37,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:51:37,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380972942] [2024-10-24 12:51:37,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380972942] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:51:37,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343058032] [2024-10-24 12:51:37,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:37,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:51:37,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:51:37,882 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) [2024-10-24 12:51:37,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 12:51:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:38,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 12:51:38,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:51:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:51:38,459 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:51:38,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343058032] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:51:38,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:51:38,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-10-24 12:51:38,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873530681] [2024-10-24 12:51:38,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:51:38,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:51:38,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:51:38,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:51:38,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:51:38,461 INFO L87 Difference]: Start difference. First operand 76 states and 104 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 12:51:38,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:51:38,717 INFO L93 Difference]: Finished difference Result 132 states and 180 transitions. [2024-10-24 12:51:38,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:51:38,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2024-10-24 12:51:38,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:51:38,719 INFO L225 Difference]: With dead ends: 132 [2024-10-24 12:51:38,719 INFO L226 Difference]: Without dead ends: 76 [2024-10-24 12:51:38,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:51:38,721 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 29 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:51:38,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 342 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 12:51:38,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-24 12:51:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-10-24 12:51:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 50 states have internal predecessors, (59), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) [2024-10-24 12:51:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 102 transitions. [2024-10-24 12:51:38,729 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 102 transitions. Word has length 43 [2024-10-24 12:51:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:51:38,730 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 102 transitions. [2024-10-24 12:51:38,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 12:51:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 102 transitions. [2024-10-24 12:51:38,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-24 12:51:38,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:51:38,731 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 12:51:38,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 12:51:38,935 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 [2024-10-24 12:51:38,936 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:51:38,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:51:38,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2078227483, now seen corresponding path program 1 times [2024-10-24 12:51:38,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:51:38,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740886035] [2024-10-24 12:51:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:38,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:51:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:39,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:51:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:39,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:51:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:39,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 12:51:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:39,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 12:51:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:39,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 12:51:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:39,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:51:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 12:51:39,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:51:39,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740886035] [2024-10-24 12:51:39,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740886035] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:51:39,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:51:39,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:51:39,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331116905] [2024-10-24 12:51:39,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:51:39,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:51:39,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:51:39,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:51:39,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:51:39,954 INFO L87 Difference]: Start difference. First operand 76 states and 102 transitions. Second operand has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-24 12:51:40,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:51:40,397 INFO L93 Difference]: Finished difference Result 87 states and 117 transitions. [2024-10-24 12:51:40,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:51:40,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 47 [2024-10-24 12:51:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:51:40,400 INFO L225 Difference]: With dead ends: 87 [2024-10-24 12:51:40,401 INFO L226 Difference]: Without dead ends: 85 [2024-10-24 12:51:40,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:51:40,402 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 3 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 12:51:40,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 605 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 12:51:40,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-24 12:51:40,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2024-10-24 12:51:40,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 56 states have internal predecessors, (64), 23 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (27), 20 states have call predecessors, (27), 20 states have call successors, (27) [2024-10-24 12:51:40,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 114 transitions. [2024-10-24 12:51:40,414 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 114 transitions. Word has length 47 [2024-10-24 12:51:40,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:51:40,415 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 114 transitions. [2024-10-24 12:51:40,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-24 12:51:40,415 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 114 transitions. [2024-10-24 12:51:40,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 12:51:40,416 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:51:40,417 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:51:40,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:51:40,417 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:51:40,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:51:40,417 INFO L85 PathProgramCache]: Analyzing trace with hash -136300131, now seen corresponding path program 1 times [2024-10-24 12:51:40,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:51:40,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611177769] [2024-10-24 12:51:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:40,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:51:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:43,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:51:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:43,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:51:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:43,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 12:51:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:43,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 12:51:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:43,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 12:51:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:43,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:51:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 12:51:43,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:51:43,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611177769] [2024-10-24 12:51:43,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611177769] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:51:43,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110506499] [2024-10-24 12:51:43,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:43,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:51:43,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:51:43,704 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) [2024-10-24 12:51:43,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 12:51:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:44,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 2482 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-10-24 12:51:44,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:51:44,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 12:51:45,017 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-10-24 12:51:45,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2024-10-24 12:51:45,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:51:45,083 INFO L349 Elim1Store]: treesize reduction 92, result has 22.7 percent of original size [2024-10-24 12:51:45,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 34 treesize of output 39 [2024-10-24 12:51:45,161 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-10-24 12:51:45,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2024-10-24 12:51:45,525 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-10-24 12:51:45,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-10-24 12:51:45,579 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 [2024-10-24 12:51:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:51:45,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:51:46,207 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_414 (Array Int Int))) (< (mod (select (select (store |c_#memory_int#5| |c_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base| v_ArrVal_414) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base|) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.offset|) 18446744073709551616) 1)) is different from false [2024-10-24 12:51:50,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110506499] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:51:50,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 12:51:50,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2024-10-24 12:51:50,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143770802] [2024-10-24 12:51:50,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 12:51:50,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-24 12:51:50,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:51:50,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-24 12:51:50,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1122, Unknown=3, NotChecked=68, Total=1332 [2024-10-24 12:51:50,976 INFO L87 Difference]: Start difference. First operand 84 states and 114 transitions. Second operand has 31 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 29 states have internal predecessors, (66), 10 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 7 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-24 12:51:54,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:51:54,195 INFO L93 Difference]: Finished difference Result 314 states and 445 transitions. [2024-10-24 12:51:54,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-24 12:51:54,195 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 29 states have internal predecessors, (66), 10 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 7 states have call predecessors, (12), 9 states have call successors, (12) Word has length 51 [2024-10-24 12:51:54,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:51:54,199 INFO L225 Difference]: With dead ends: 314 [2024-10-24 12:51:54,199 INFO L226 Difference]: Without dead ends: 242 [2024-10-24 12:51:54,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 59 SyntacticMatches, 9 SemanticMatches, 60 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1154 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=439, Invalid=3222, Unknown=3, NotChecked=118, Total=3782 [2024-10-24 12:51:54,204 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 339 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:51:54,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 980 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-24 12:51:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-10-24 12:51:54,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 185. [2024-10-24 12:51:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 123 states have (on average 1.2520325203252032) internal successors, (154), 128 states have internal predecessors, (154), 46 states have call successors, (46), 16 states have call predecessors, (46), 15 states have return successors, (49), 40 states have call predecessors, (49), 40 states have call successors, (49) [2024-10-24 12:51:54,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 249 transitions. [2024-10-24 12:51:54,255 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 249 transitions. Word has length 51 [2024-10-24 12:51:54,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:51:54,255 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 249 transitions. [2024-10-24 12:51:54,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 29 states have internal predecessors, (66), 10 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 7 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-24 12:51:54,256 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 249 transitions. [2024-10-24 12:51:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 12:51:54,258 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:51:54,258 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:51:54,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 12:51:54,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:51:54,463 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:51:54,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:51:54,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1549250909, now seen corresponding path program 1 times [2024-10-24 12:51:54,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:51:54,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740244162] [2024-10-24 12:51:54,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:54,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:51:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:57,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:51:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:57,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:51:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:57,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 12:51:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:57,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 12:51:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:57,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 12:51:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:57,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:51:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 12:51:57,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:51:57,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740244162] [2024-10-24 12:51:57,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740244162] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:51:57,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647358169] [2024-10-24 12:51:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:57,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:51:57,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:51:57,832 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) [2024-10-24 12:51:57,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 12:51:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:58,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 2512 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-10-24 12:51:58,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:51:58,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 12:51:58,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-24 12:51:58,893 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 [2024-10-24 12:51:59,783 INFO L349 Elim1Store]: treesize reduction 84, result has 25.0 percent of original size [2024-10-24 12:51:59,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 29 treesize of output 40 [2024-10-24 12:51:59,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:51:59,861 INFO L349 Elim1Store]: treesize reduction 150, result has 21.1 percent of original size [2024-10-24 12:51:59,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 39 treesize of output 55 [2024-10-24 12:51:59,951 INFO L349 Elim1Store]: treesize reduction 84, result has 25.0 percent of original size [2024-10-24 12:51:59,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 29 treesize of output 40 [2024-10-24 12:52:00,498 INFO L349 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2024-10-24 12:52:00,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 25 [2024-10-24 12:52:00,739 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 111 treesize of output 104 [2024-10-24 12:52:00,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:52:00,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 92 [2024-10-24 12:52:00,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:52:00,780 INFO L349 Elim1Store]: treesize reduction 36, result has 33.3 percent of original size [2024-10-24 12:52:00,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 75 [2024-10-24 12:52:00,789 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 69 treesize of output 44 [2024-10-24 12:52:00,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-24 12:52:00,831 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 29 treesize of output 19 [2024-10-24 12:52:00,863 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 29 treesize of output 19 [2024-10-24 12:52:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:52:01,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:52:02,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:52:02,536 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 19 treesize of output 23 [2024-10-24 12:52:03,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647358169] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:52:03,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 12:52:03,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25] total 40 [2024-10-24 12:52:03,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380519449] [2024-10-24 12:52:03,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 12:52:03,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-24 12:52:03,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:52:03,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-24 12:52:03,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2415, Unknown=7, NotChecked=0, Total=2652 [2024-10-24 12:52:03,018 INFO L87 Difference]: Start difference. First operand 185 states and 249 transitions. Second operand has 40 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 35 states have internal predecessors, (66), 11 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) [2024-10-24 12:52:05,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:52:13,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:52:13,221 INFO L93 Difference]: Finished difference Result 525 states and 699 transitions. [2024-10-24 12:52:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-24 12:52:13,222 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 35 states have internal predecessors, (66), 11 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) Word has length 51 [2024-10-24 12:52:13,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:52:13,226 INFO L225 Difference]: With dead ends: 525 [2024-10-24 12:52:13,226 INFO L226 Difference]: Without dead ends: 454 [2024-10-24 12:52:13,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3317 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1008, Invalid=9287, Unknown=7, NotChecked=0, Total=10302 [2024-10-24 12:52:13,230 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 387 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 2633 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:52:13,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1160 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2633 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-10-24 12:52:13,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-10-24 12:52:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 242. [2024-10-24 12:52:13,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 167 states have (on average 1.2455089820359282) internal successors, (208), 174 states have internal predecessors, (208), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (55), 44 states have call predecessors, (55), 45 states have call successors, (55) [2024-10-24 12:52:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 314 transitions. [2024-10-24 12:52:13,290 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 314 transitions. Word has length 51 [2024-10-24 12:52:13,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:52:13,290 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 314 transitions. [2024-10-24 12:52:13,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 35 states have internal predecessors, (66), 11 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) [2024-10-24 12:52:13,291 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 314 transitions. [2024-10-24 12:52:13,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 12:52:13,293 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:52:13,293 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:52:13,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 12:52:13,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:52:13,494 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:52:13,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:52:13,494 INFO L85 PathProgramCache]: Analyzing trace with hash -491001867, now seen corresponding path program 1 times [2024-10-24 12:52:13,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:52:13,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41086398] [2024-10-24 12:52:13,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:52:13,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:52:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:13,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:52:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:13,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:52:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:13,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 12:52:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:13,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 12:52:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:13,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 12:52:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:13,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:52:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:13,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 12:52:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:13,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 12:52:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-24 12:52:13,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:52:13,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41086398] [2024-10-24 12:52:13,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41086398] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:52:13,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:52:13,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:52:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699745315] [2024-10-24 12:52:13,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:52:13,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:52:13,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:52:13,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:52:13,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:52:13,835 INFO L87 Difference]: Start difference. First operand 242 states and 314 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 12:52:14,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:52:14,142 INFO L93 Difference]: Finished difference Result 340 states and 441 transitions. [2024-10-24 12:52:14,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:52:14,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2024-10-24 12:52:14,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:52:14,148 INFO L225 Difference]: With dead ends: 340 [2024-10-24 12:52:14,148 INFO L226 Difference]: Without dead ends: 244 [2024-10-24 12:52:14,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:52:14,150 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 2 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:52:14,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 242 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 12:52:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-10-24 12:52:14,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 242. [2024-10-24 12:52:14,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 167 states have (on average 1.2335329341317365) internal successors, (206), 174 states have internal predecessors, (206), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (55), 44 states have call predecessors, (55), 45 states have call successors, (55) [2024-10-24 12:52:14,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 312 transitions. [2024-10-24 12:52:14,208 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 312 transitions. Word has length 58 [2024-10-24 12:52:14,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:52:14,208 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 312 transitions. [2024-10-24 12:52:14,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 12:52:14,209 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 312 transitions. [2024-10-24 12:52:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 12:52:14,210 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:52:14,210 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:52:14,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:52:14,210 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:52:14,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:52:14,211 INFO L85 PathProgramCache]: Analyzing trace with hash -616587024, now seen corresponding path program 1 times [2024-10-24 12:52:14,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:52:14,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79336974] [2024-10-24 12:52:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:52:14,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:52:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:14,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:52:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:14,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:52:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:14,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 12:52:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:14,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 12:52:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:14,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 12:52:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:14,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:52:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:14,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 12:52:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:14,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 12:52:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-24 12:52:14,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:52:14,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79336974] [2024-10-24 12:52:14,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79336974] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:52:14,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:52:14,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:52:14,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100111365] [2024-10-24 12:52:14,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:52:14,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:52:14,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:52:14,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:52:14,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:52:14,952 INFO L87 Difference]: Start difference. First operand 242 states and 312 transitions. Second operand has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-10-24 12:52:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:52:15,459 INFO L93 Difference]: Finished difference Result 264 states and 336 transitions. [2024-10-24 12:52:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:52:15,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2024-10-24 12:52:15,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:52:15,463 INFO L225 Difference]: With dead ends: 264 [2024-10-24 12:52:15,463 INFO L226 Difference]: Without dead ends: 262 [2024-10-24 12:52:15,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:52:15,465 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 3 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:52:15,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 633 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 12:52:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-10-24 12:52:15,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 252. [2024-10-24 12:52:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 173 states have (on average 1.2254335260115607) internal successors, (212), 180 states have internal predecessors, (212), 53 states have call successors, (53), 25 states have call predecessors, (53), 25 states have return successors, (57), 46 states have call predecessors, (57), 47 states have call successors, (57) [2024-10-24 12:52:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 322 transitions. [2024-10-24 12:52:15,508 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 322 transitions. Word has length 60 [2024-10-24 12:52:15,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:52:15,508 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 322 transitions. [2024-10-24 12:52:15,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-10-24 12:52:15,509 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 322 transitions. [2024-10-24 12:52:15,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 12:52:15,510 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:52:15,510 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 12:52:15,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:52:15,510 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:52:15,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:52:15,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1424304611, now seen corresponding path program 1 times [2024-10-24 12:52:15,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:52:15,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596501625] [2024-10-24 12:52:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:52:15,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:52:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:16,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:52:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:16,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:52:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:16,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 12:52:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:16,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 12:52:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:16,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:52:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:16,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:52:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-24 12:52:16,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:52:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596501625] [2024-10-24 12:52:16,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596501625] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:52:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136010619] [2024-10-24 12:52:16,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:52:16,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:52:16,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:52:16,397 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) [2024-10-24 12:52:16,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 12:52:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:16,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 12:52:16,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:52:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 12:52:16,970 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:52:16,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136010619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:52:16,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:52:16,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 11 [2024-10-24 12:52:16,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692451918] [2024-10-24 12:52:16,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:52:16,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:52:16,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:52:16,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:52:16,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:52:16,972 INFO L87 Difference]: Start difference. First operand 252 states and 322 transitions. Second operand has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 12:52:17,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:52:17,379 INFO L93 Difference]: Finished difference Result 398 states and 511 transitions. [2024-10-24 12:52:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:52:17,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2024-10-24 12:52:17,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:52:17,382 INFO L225 Difference]: With dead ends: 398 [2024-10-24 12:52:17,382 INFO L226 Difference]: Without dead ends: 272 [2024-10-24 12:52:17,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:52:17,383 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 12:52:17,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 685 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 12:52:17,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-10-24 12:52:17,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 260. [2024-10-24 12:52:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 179 states have (on average 1.217877094972067) internal successors, (218), 188 states have internal predecessors, (218), 53 states have call successors, (53), 25 states have call predecessors, (53), 27 states have return successors, (61), 46 states have call predecessors, (61), 47 states have call successors, (61) [2024-10-24 12:52:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 332 transitions. [2024-10-24 12:52:17,421 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 332 transitions. Word has length 59 [2024-10-24 12:52:17,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:52:17,422 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 332 transitions. [2024-10-24 12:52:17,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 12:52:17,422 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 332 transitions. [2024-10-24 12:52:17,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 12:52:17,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:52:17,423 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:52:17,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 12:52:17,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:52:17,624 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:52:17,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:52:17,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1950566819, now seen corresponding path program 1 times [2024-10-24 12:52:17,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:52:17,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139796054] [2024-10-24 12:52:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:52:17,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:52:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:19,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:52:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:19,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 12:52:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:19,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:52:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:19,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:52:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:19,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 12:52:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:19,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 12:52:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:19,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:52:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:19,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 12:52:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 12:52:19,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:52:19,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139796054] [2024-10-24 12:52:19,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139796054] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:52:19,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:52:19,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-10-24 12:52:19,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171055092] [2024-10-24 12:52:19,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:52:19,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 12:52:19,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:52:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 12:52:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-10-24 12:52:19,450 INFO L87 Difference]: Start difference. First operand 260 states and 332 transitions. Second operand has 17 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-24 12:52:21,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:52:21,219 INFO L93 Difference]: Finished difference Result 393 states and 513 transitions. [2024-10-24 12:52:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 12:52:21,220 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 61 [2024-10-24 12:52:21,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:52:21,222 INFO L225 Difference]: With dead ends: 393 [2024-10-24 12:52:21,222 INFO L226 Difference]: Without dead ends: 306 [2024-10-24 12:52:21,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-10-24 12:52:21,223 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 95 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-24 12:52:21,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 617 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-24 12:52:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-10-24 12:52:21,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 268. [2024-10-24 12:52:21,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 184 states have (on average 1.2228260869565217) internal successors, (225), 194 states have internal predecessors, (225), 56 states have call successors, (56), 25 states have call predecessors, (56), 27 states have return successors, (64), 48 states have call predecessors, (64), 50 states have call successors, (64) [2024-10-24 12:52:21,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 345 transitions. [2024-10-24 12:52:21,267 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 345 transitions. Word has length 61 [2024-10-24 12:52:21,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:52:21,268 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 345 transitions. [2024-10-24 12:52:21,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-24 12:52:21,268 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 345 transitions. [2024-10-24 12:52:21,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 12:52:21,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:52:21,271 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:52:21,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 12:52:21,271 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:52:21,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:52:21,271 INFO L85 PathProgramCache]: Analyzing trace with hash -658849437, now seen corresponding path program 1 times [2024-10-24 12:52:21,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:52:21,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298361362] [2024-10-24 12:52:21,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:52:21,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:52:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:23,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:52:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:23,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 12:52:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:23,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:52:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:23,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:52:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:23,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 12:52:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:23,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 12:52:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:23,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:52:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:23,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 12:52:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 12:52:24,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:52:24,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298361362] [2024-10-24 12:52:24,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298361362] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:52:24,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:52:24,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-10-24 12:52:24,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629494903] [2024-10-24 12:52:24,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:52:24,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 12:52:24,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:52:24,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 12:52:24,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-10-24 12:52:24,194 INFO L87 Difference]: Start difference. First operand 268 states and 345 transitions. Second operand has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-24 12:52:26,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:52:26,638 INFO L93 Difference]: Finished difference Result 379 states and 492 transitions. [2024-10-24 12:52:26,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 12:52:26,639 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 61 [2024-10-24 12:52:26,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:52:26,641 INFO L225 Difference]: With dead ends: 379 [2024-10-24 12:52:26,642 INFO L226 Difference]: Without dead ends: 307 [2024-10-24 12:52:26,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-10-24 12:52:26,646 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 87 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:52:26,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 493 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-24 12:52:26,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-10-24 12:52:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 268. [2024-10-24 12:52:26,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 184 states have (on average 1.2228260869565217) internal successors, (225), 194 states have internal predecessors, (225), 56 states have call successors, (56), 25 states have call predecessors, (56), 27 states have return successors, (64), 48 states have call predecessors, (64), 50 states have call successors, (64) [2024-10-24 12:52:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 345 transitions. [2024-10-24 12:52:26,689 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 345 transitions. Word has length 61 [2024-10-24 12:52:26,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:52:26,690 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 345 transitions. [2024-10-24 12:52:26,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-24 12:52:26,690 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 345 transitions. [2024-10-24 12:52:26,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 12:52:26,691 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:52:26,692 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:52:26,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 12:52:26,693 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:52:26,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:52:26,693 INFO L85 PathProgramCache]: Analyzing trace with hash -91156234, now seen corresponding path program 1 times [2024-10-24 12:52:26,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:52:26,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132973188] [2024-10-24 12:52:26,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:52:26,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:52:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:27,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:52:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:27,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:52:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:27,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:52:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:27,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:52:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:27,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:52:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:27,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 12:52:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-24 12:52:27,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:52:27,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132973188] [2024-10-24 12:52:27,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132973188] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:52:27,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440411191] [2024-10-24 12:52:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:52:27,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:52:27,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:52:27,481 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) [2024-10-24 12:52:27,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 12:52:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:27,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 2516 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-24 12:52:27,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:52:27,953 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 13 treesize of output 9 [2024-10-24 12:52:27,956 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 13 treesize of output 9 [2024-10-24 12:52:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 12:52:28,287 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:52:28,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440411191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:52:28,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:52:28,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2024-10-24 12:52:28,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209709705] [2024-10-24 12:52:28,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:52:28,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:52:28,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:52:28,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:52:28,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-10-24 12:52:28,289 INFO L87 Difference]: Start difference. First operand 268 states and 345 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 12:52:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:52:30,349 INFO L93 Difference]: Finished difference Result 553 states and 706 transitions. [2024-10-24 12:52:30,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 12:52:30,350 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 61 [2024-10-24 12:52:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:52:30,353 INFO L225 Difference]: With dead ends: 553 [2024-10-24 12:52:30,353 INFO L226 Difference]: Without dead ends: 431 [2024-10-24 12:52:30,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-10-24 12:52:30,355 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 103 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-24 12:52:30,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 548 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-24 12:52:30,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-10-24 12:52:30,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 306. [2024-10-24 12:52:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 211 states have (on average 1.2274881516587677) internal successors, (259), 224 states have internal predecessors, (259), 63 states have call successors, (63), 29 states have call predecessors, (63), 31 states have return successors, (73), 52 states have call predecessors, (73), 57 states have call successors, (73) [2024-10-24 12:52:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 395 transitions. [2024-10-24 12:52:30,399 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 395 transitions. Word has length 61 [2024-10-24 12:52:30,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:52:30,400 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 395 transitions. [2024-10-24 12:52:30,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 12:52:30,400 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 395 transitions. [2024-10-24 12:52:30,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 12:52:30,401 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:52:30,401 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:52:30,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 12:52:30,602 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,SelfDestructingSolverStorable12 [2024-10-24 12:52:30,603 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:52:30,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:52:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2119742344, now seen corresponding path program 1 times [2024-10-24 12:52:30,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:52:30,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014142516] [2024-10-24 12:52:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:52:30,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:52:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:30,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:52:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:30,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:52:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:30,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:52:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:30,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:52:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:30,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:52:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:30,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 12:52:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 12:52:30,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:52:30,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014142516] [2024-10-24 12:52:30,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014142516] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:52:30,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175462265] [2024-10-24 12:52:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:52:30,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:52:30,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:52:30,816 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) [2024-10-24 12:52:30,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 12:52:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:31,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 12:52:31,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:52:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 12:52:31,312 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:52:31,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175462265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:52:31,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:52:31,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-10-24 12:52:31,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743232813] [2024-10-24 12:52:31,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:52:31,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:52:31,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:52:31,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:52:31,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:52:31,314 INFO L87 Difference]: Start difference. First operand 306 states and 395 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 12:52:31,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:52:31,468 INFO L93 Difference]: Finished difference Result 529 states and 693 transitions. [2024-10-24 12:52:31,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:52:31,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2024-10-24 12:52:31,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:52:31,471 INFO L225 Difference]: With dead ends: 529 [2024-10-24 12:52:31,471 INFO L226 Difference]: Without dead ends: 282 [2024-10-24 12:52:31,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:52:31,473 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 12:52:31,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 262 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 12:52:31,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-10-24 12:52:31,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 278. [2024-10-24 12:52:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 192 states have (on average 1.203125) internal successors, (231), 204 states have internal predecessors, (231), 56 states have call successors, (56), 27 states have call predecessors, (56), 29 states have return successors, (63), 46 states have call predecessors, (63), 50 states have call successors, (63) [2024-10-24 12:52:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 350 transitions. [2024-10-24 12:52:31,516 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 350 transitions. Word has length 61 [2024-10-24 12:52:31,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:52:31,516 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 350 transitions. [2024-10-24 12:52:31,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 12:52:31,517 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 350 transitions. [2024-10-24 12:52:31,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 12:52:31,518 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:52:31,518 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:52:31,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 12:52:31,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-24 12:52:31,720 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:52:31,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:52:31,720 INFO L85 PathProgramCache]: Analyzing trace with hash -897099480, now seen corresponding path program 1 times [2024-10-24 12:52:31,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:52:31,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121778312] [2024-10-24 12:52:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:52:31,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:52:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:32,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:52:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:32,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:52:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:32,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 12:52:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:32,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 12:52:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:32,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 12:52:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:32,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:52:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:32,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 12:52:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:32,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 12:52:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-24 12:52:32,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:52:32,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121778312] [2024-10-24 12:52:32,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121778312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:52:32,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:52:32,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 12:52:32,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354818684] [2024-10-24 12:52:32,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:52:32,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:52:32,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:52:32,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:52:32,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:52:32,287 INFO L87 Difference]: Start difference. First operand 278 states and 350 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 12:52:32,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:52:32,807 INFO L93 Difference]: Finished difference Result 399 states and 502 transitions. [2024-10-24 12:52:32,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:52:32,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2024-10-24 12:52:32,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:52:32,810 INFO L225 Difference]: With dead ends: 399 [2024-10-24 12:52:32,810 INFO L226 Difference]: Without dead ends: 306 [2024-10-24 12:52:32,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:52:32,813 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 39 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:52:32,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 335 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 12:52:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-10-24 12:52:32,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 250. [2024-10-24 12:52:32,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 177 states have (on average 1.2033898305084745) internal successors, (213), 187 states have internal predecessors, (213), 45 states have call successors, (45), 25 states have call predecessors, (45), 27 states have return successors, (52), 37 states have call predecessors, (52), 42 states have call successors, (52) [2024-10-24 12:52:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 310 transitions. [2024-10-24 12:52:32,856 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 310 transitions. Word has length 64 [2024-10-24 12:52:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:52:32,857 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 310 transitions. [2024-10-24 12:52:32,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 12:52:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 310 transitions. [2024-10-24 12:52:32,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 12:52:32,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:52:32,858 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:52:32,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 12:52:32,859 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:52:32,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:52:32,859 INFO L85 PathProgramCache]: Analyzing trace with hash 511736168, now seen corresponding path program 1 times [2024-10-24 12:52:32,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:52:32,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736256953] [2024-10-24 12:52:32,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:52:32,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:52:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:34,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:52:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:34,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:52:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:34,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 12:52:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:34,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 12:52:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:34,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 12:52:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:34,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:52:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:34,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 12:52:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:34,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 12:52:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 12:52:35,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:52:35,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736256953] [2024-10-24 12:52:35,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736256953] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:52:35,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570904233] [2024-10-24 12:52:35,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:52:35,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:52:35,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:52:35,109 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) [2024-10-24 12:52:35,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 12:52:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:52:35,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 2543 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-24 12:52:35,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:52:35,585 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 [2024-10-24 12:52:35,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2024-10-24 12:52:36,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2024-10-24 12:52:36,028 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-24 12:52:36,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2024-10-24 12:52:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 12:52:36,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:52:36,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:52:36,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2024-10-24 12:52:36,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2024-10-24 12:52:36,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:52:36,884 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 20 treesize of output 24 [2024-10-24 12:52:37,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-10-24 12:52:37,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-10-24 12:52:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-24 12:52:37,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570904233] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:52:37,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:52:37,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 16] total 39 [2024-10-24 12:52:37,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364671933] [2024-10-24 12:52:37,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:52:37,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-24 12:52:37,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:52:37,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-24 12:52:37,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1355, Unknown=0, NotChecked=0, Total=1482 [2024-10-24 12:52:37,301 INFO L87 Difference]: Start difference. First operand 250 states and 310 transitions. Second operand has 39 states, 33 states have (on average 2.484848484848485) internal successors, (82), 37 states have internal predecessors, (82), 15 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 10 states have call predecessors, (22), 14 states have call successors, (22)