./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_buf_write_be16_harness_negated.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_buf_write_be16_harness_negated.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 57a18073b2c44f50c41075cb58c545f11651aa11bf22ee68e7e7b5aa1590e494 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:49:50,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:49:50,841 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 12:49:50,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:49:50,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:49:50,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:49:50,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:49:50,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:49:50,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:49:50,880 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:49:50,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:49:50,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:49:50,883 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:49:50,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:49:50,883 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:49:50,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:49:50,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:49:50,884 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:49:50,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:49:50,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:49:50,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:49:50,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:49:50,886 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:49:50,887 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:49:50,887 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:49:50,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:49:50,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:49:50,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:49:50,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:49:50,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:49:50,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:49:50,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:49:50,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:49:50,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:49:50,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:49:50,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:49:50,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:49:50,890 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:49:50,890 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:49:50,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57a18073b2c44f50c41075cb58c545f11651aa11bf22ee68e7e7b5aa1590e494 [2024-10-24 12:49:51,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:49:51,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:49:51,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:49:51,153 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:49:51,154 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:49:51,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness_negated.i [2024-10-24 12:49:52,677 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:49:53,154 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:49:53,154 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness_negated.i [2024-10-24 12:49:53,199 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d97f6365/02430ce98523455eb6463f871350b78b/FLAGb4e01c75e [2024-10-24 12:49:53,216 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d97f6365/02430ce98523455eb6463f871350b78b [2024-10-24 12:49:53,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:49:53,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:49:53,224 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:49:53,224 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:49:53,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:49:53,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:49:53" (1/1) ... [2024-10-24 12:49:53,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532331a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:53, skipping insertion in model container [2024-10-24 12:49:53,230 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:49:53" (1/1) ... [2024-10-24 12:49:53,344 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:49:53,711 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_buf_write_be16_harness_negated.i[4497,4510] [2024-10-24 12:49:53,721 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_buf_write_be16_harness_negated.i[4557,4570] [2024-10-24 12:49:54,403 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:54,404 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:54,404 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:54,405 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:54,409 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:54,428 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:54,429 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:54,431 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:54,432 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:54,940 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:54,941 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:55,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:49:55,060 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:49:55,074 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_buf_write_be16_harness_negated.i[4497,4510] [2024-10-24 12:49:55,075 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_buf_write_be16_harness_negated.i[4557,4570] [2024-10-24 12:49:55,147 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:55,147 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:55,148 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:55,150 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:55,151 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:55,158 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:55,163 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:55,187 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:55,188 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:55,329 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8259] [2024-10-24 12:49:55,332 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:55,333 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:55,350 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8745-8756] [2024-10-24 12:49:55,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:49:55,604 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:49:55,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55 WrapperNode [2024-10-24 12:49:55,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:49:55,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:49:55,606 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:49:55,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:49:55,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55" (1/1) ... [2024-10-24 12:49:55,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55" (1/1) ... [2024-10-24 12:49:55,841 INFO L138 Inliner]: procedures = 680, calls = 2606, calls flagged for inlining = 63, calls inlined = 11, statements flattened = 879 [2024-10-24 12:49:55,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:49:55,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:49:55,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:49:55,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:49:55,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55" (1/1) ... [2024-10-24 12:49:55,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55" (1/1) ... [2024-10-24 12:49:55,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55" (1/1) ... [2024-10-24 12:49:55,950 INFO L175 MemorySlicer]: Split 559 memory accesses to 7 slices as follows [2, 256, 236, 47, 8, 6, 4]. 46 percent of accesses are in the largest equivalence class. The 507 initializations are split as follows [2, 256, 236, 8, 5, 0, 0]. The 8 writes are split as follows [0, 0, 0, 3, 1, 2, 2]. [2024-10-24 12:49:55,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55" (1/1) ... [2024-10-24 12:49:55,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55" (1/1) ... [2024-10-24 12:49:55,984 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55" (1/1) ... [2024-10-24 12:49:55,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55" (1/1) ... [2024-10-24 12:49:55,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55" (1/1) ... [2024-10-24 12:49:56,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55" (1/1) ... [2024-10-24 12:49:56,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:49:56,022 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:49:56,022 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:49:56,022 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:49:56,023 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55" (1/1) ... [2024-10-24 12:49:56,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:49:56,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:49:56,060 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 12:49:56,063 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 12:49:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-10-24 12:49:56,109 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-10-24 12:49:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:49:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-10-24 12:49:56,110 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-10-24 12:49:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:49:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:49:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:49:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 12:49:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 12:49:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-24 12:49:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-24 12:49:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 12:49:56,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 12:49:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:49:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:49:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 12:49:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 12:49:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 12:49:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 12:49:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-24 12:49:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-24 12:49:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-10-24 12:49:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-10-24 12:49:56,113 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-10-24 12:49:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:49:56,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:49:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-10-24 12:49:56,113 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-10-24 12:49:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-10-24 12:49:56,114 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-10-24 12:49:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 12:49:56,114 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 12:49:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-10-24 12:49:56,114 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-10-24 12:49:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:49:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 12:49:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 12:49:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 12:49:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 12:49:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-24 12:49:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-24 12:49:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-10-24 12:49:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2024-10-24 12:49:56,116 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2024-10-24 12:49:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-24 12:49:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-24 12:49:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-24 12:49:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-24 12:49:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-10-24 12:49:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-10-24 12:49:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-10-24 12:49:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-10-24 12:49:56,117 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-10-24 12:49:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:49:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:49:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:49:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 12:49:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 12:49:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 12:49:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-24 12:49:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:49:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:49:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:49:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 12:49:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 12:49:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 12:49:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-24 12:49:56,437 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:49:56,439 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:49:57,450 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-10-24 12:49:57,451 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:49:57,711 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:49:57,712 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 12:49:57,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:49:57 BoogieIcfgContainer [2024-10-24 12:49:57,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:49:57,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:49:57,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:49:57,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:49:57,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:49:53" (1/3) ... [2024-10-24 12:49:57,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a2823e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:49:57, skipping insertion in model container [2024-10-24 12:49:57,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:55" (2/3) ... [2024-10-24 12:49:57,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a2823e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:49:57, skipping insertion in model container [2024-10-24 12:49:57,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:49:57" (3/3) ... [2024-10-24 12:49:57,725 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be16_harness_negated.i [2024-10-24 12:49:57,742 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:49:57,742 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:49:57,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:49:57,828 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;@3db54b8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:49:57,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 12:49:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 71 states have internal predecessors, (90), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-24 12:49:57,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 12:49:57,851 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:57,852 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:49:57,853 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:57,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:57,859 INFO L85 PathProgramCache]: Analyzing trace with hash -710722991, now seen corresponding path program 1 times [2024-10-24 12:49:57,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:57,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504557312] [2024-10-24 12:49:57,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:57,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:49:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:49:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:49:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:49:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:49:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:49:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:49:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 12:49:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 12:49:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 12:49:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-24 12:49:58,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:58,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504557312] [2024-10-24 12:49:58,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504557312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:58,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:49:58,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:49:58,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998760999] [2024-10-24 12:49:58,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:58,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:49:58,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:58,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:49:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:49:58,705 INFO L87 Difference]: Start difference. First operand has 116 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 71 states have internal predecessors, (90), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 12:49:59,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:59,270 INFO L93 Difference]: Finished difference Result 230 states and 339 transitions. [2024-10-24 12:49:59,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:49:59,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 76 [2024-10-24 12:49:59,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:59,283 INFO L225 Difference]: With dead ends: 230 [2024-10-24 12:49:59,283 INFO L226 Difference]: Without dead ends: 114 [2024-10-24 12:49:59,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:49:59,290 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 69 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:59,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 89 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 12:49:59,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-24 12:49:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-10-24 12:49:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 70 states have internal predecessors, (86), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-10-24 12:49:59,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 153 transitions. [2024-10-24 12:49:59,346 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 153 transitions. Word has length 76 [2024-10-24 12:49:59,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:59,348 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 153 transitions. [2024-10-24 12:49:59,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 12:49:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 153 transitions. [2024-10-24 12:49:59,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 12:49:59,352 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:59,352 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:49:59,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:49:59,353 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:59,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:59,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1579207851, now seen corresponding path program 1 times [2024-10-24 12:49:59,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:59,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369138626] [2024-10-24 12:49:59,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:59,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:50:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:50:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:50:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:50:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:50:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:50:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:50:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 12:50:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 12:50:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 12:50:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-24 12:50:00,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:00,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369138626] [2024-10-24 12:50:00,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369138626] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:00,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83579476] [2024-10-24 12:50:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:00,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:00,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:00,206 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 12:50:00,208 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 12:50:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 2588 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:50:00,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:50:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 12:50:00,970 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:50:00,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83579476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:50:00,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:50:00,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-10-24 12:50:00,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40188395] [2024-10-24 12:50:00,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:50:00,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:50:00,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:00,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:50:00,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:50:00,975 INFO L87 Difference]: Start difference. First operand 114 states and 153 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 12:50:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:50:01,330 INFO L93 Difference]: Finished difference Result 211 states and 290 transitions. [2024-10-24 12:50:01,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:50:01,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 76 [2024-10-24 12:50:01,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:50:01,335 INFO L225 Difference]: With dead ends: 211 [2024-10-24 12:50:01,335 INFO L226 Difference]: Without dead ends: 116 [2024-10-24 12:50:01,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:50:01,337 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 24 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:50:01,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 341 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 12:50:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-24 12:50:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-10-24 12:50:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (37), 33 states have call predecessors, (37), 33 states have call successors, (37) [2024-10-24 12:50:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 158 transitions. [2024-10-24 12:50:01,362 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 158 transitions. Word has length 76 [2024-10-24 12:50:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:50:01,362 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 158 transitions. [2024-10-24 12:50:01,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 12:50:01,362 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 158 transitions. [2024-10-24 12:50:01,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-24 12:50:01,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:50:01,366 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:50:01,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 12:50:01,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:01,571 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:50:01,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:50:01,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1448200832, now seen corresponding path program 1 times [2024-10-24 12:50:01,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:50:01,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979740827] [2024-10-24 12:50:01,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:01,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:50:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:02,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:02,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:50:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:02,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:50:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:02,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:02,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:50:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:02,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:50:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:02,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:50:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:02,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 12:50:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:02,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 12:50:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:02,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 12:50:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:02,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 12:50:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:02,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 12:50:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-24 12:50:02,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:02,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979740827] [2024-10-24 12:50:02,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979740827] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:02,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200919906] [2024-10-24 12:50:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:02,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:02,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:02,799 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 12:50:02,801 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 12:50:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:03,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 2605 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 12:50:03,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:50:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-24 12:50:03,494 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:50:03,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200919906] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:50:03,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:50:03,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-10-24 12:50:03,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359002465] [2024-10-24 12:50:03,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:50:03,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:50:03,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:03,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:50:03,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-10-24 12:50:03,497 INFO L87 Difference]: Start difference. First operand 116 states and 158 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-24 12:50:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:50:03,925 INFO L93 Difference]: Finished difference Result 206 states and 281 transitions. [2024-10-24 12:50:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:50:03,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 82 [2024-10-24 12:50:03,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:50:03,929 INFO L225 Difference]: With dead ends: 206 [2024-10-24 12:50:03,929 INFO L226 Difference]: Without dead ends: 116 [2024-10-24 12:50:03,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-10-24 12:50:03,934 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 23 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 12:50:03,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 469 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 12:50:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-24 12:50:03,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-10-24 12:50:03,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2024-10-24 12:50:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2024-10-24 12:50:03,953 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 82 [2024-10-24 12:50:03,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:50:03,954 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2024-10-24 12:50:03,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-24 12:50:03,955 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2024-10-24 12:50:03,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-24 12:50:03,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:50:03,958 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:50:03,980 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 12:50:04,159 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,SelfDestructingSolverStorable2 [2024-10-24 12:50:04,160 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:50:04,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:50:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash -169655051, now seen corresponding path program 2 times [2024-10-24 12:50:04,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:50:04,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836858109] [2024-10-24 12:50:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:04,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:50:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:04,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:04,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:50:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:04,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:50:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:04,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:04,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:50:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:05,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:50:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:05,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:50:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:05,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 12:50:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:05,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:50:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:05,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 12:50:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:05,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 12:50:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:05,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 12:50:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-24 12:50:05,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:05,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836858109] [2024-10-24 12:50:05,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836858109] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:05,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437124538] [2024-10-24 12:50:05,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:50:05,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:05,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:05,214 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 12:50:05,215 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 12:50:05,711 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 12:50:05,711 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:50:05,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 2264 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 12:50:05,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:50:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-24 12:50:05,809 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:50:05,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437124538] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:50:05,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:50:05,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2024-10-24 12:50:05,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936568357] [2024-10-24 12:50:05,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:50:05,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:50:05,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:50:05,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2024-10-24 12:50:05,813 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand has 7 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-24 12:50:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:50:06,536 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2024-10-24 12:50:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:50:06,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 88 [2024-10-24 12:50:06,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:50:06,542 INFO L225 Difference]: With dead ends: 124 [2024-10-24 12:50:06,544 INFO L226 Difference]: Without dead ends: 122 [2024-10-24 12:50:06,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2024-10-24 12:50:06,546 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 3 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 12:50:06,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 813 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 12:50:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-10-24 12:50:06,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2024-10-24 12:50:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 75 states have internal predecessors, (90), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (37), 34 states have call predecessors, (37), 34 states have call successors, (37) [2024-10-24 12:50:06,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 162 transitions. [2024-10-24 12:50:06,568 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 162 transitions. Word has length 88 [2024-10-24 12:50:06,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:50:06,569 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 162 transitions. [2024-10-24 12:50:06,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-24 12:50:06,569 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 162 transitions. [2024-10-24 12:50:06,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-24 12:50:06,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:50:06,574 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:50:06,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 12:50:06,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:06,775 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:50:06,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:50:06,776 INFO L85 PathProgramCache]: Analyzing trace with hash -733579350, now seen corresponding path program 3 times [2024-10-24 12:50:06,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:50:06,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431800569] [2024-10-24 12:50:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:06,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:50:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:07,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:07,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:50:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:07,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:50:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:07,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:07,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:50:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:07,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:50:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:07,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:50:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:07,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 12:50:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:07,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:50:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:07,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 12:50:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:07,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 12:50:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:07,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 12:50:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-24 12:50:07,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:07,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431800569] [2024-10-24 12:50:07,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431800569] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:07,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285628607] [2024-10-24 12:50:07,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 12:50:07,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:07,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:07,790 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 12:50:07,792 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 12:50:08,400 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-24 12:50:08,400 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:50:08,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 12:50:08,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:50:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-24 12:50:08,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:50:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-24 12:50:08,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285628607] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:50:08,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:50:08,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 7] total 16 [2024-10-24 12:50:08,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063298417] [2024-10-24 12:50:08,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:50:08,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 12:50:08,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:08,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 12:50:08,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-24 12:50:08,873 INFO L87 Difference]: Start difference. First operand 121 states and 162 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 7 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) [2024-10-24 12:50:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:50:10,594 INFO L93 Difference]: Finished difference Result 204 states and 276 transitions. [2024-10-24 12:50:10,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:50:10,595 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 7 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) Word has length 94 [2024-10-24 12:50:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:50:10,597 INFO L225 Difference]: With dead ends: 204 [2024-10-24 12:50:10,597 INFO L226 Difference]: Without dead ends: 114 [2024-10-24 12:50:10,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-10-24 12:50:10,598 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 144 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-24 12:50:10,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 423 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-24 12:50:10,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-24 12:50:10,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-10-24 12:50:10,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 70 states have internal predecessors, (85), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-10-24 12:50:10,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 152 transitions. [2024-10-24 12:50:10,610 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 152 transitions. Word has length 94 [2024-10-24 12:50:10,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:50:10,610 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 152 transitions. [2024-10-24 12:50:10,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 7 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) [2024-10-24 12:50:10,611 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 152 transitions. [2024-10-24 12:50:10,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-24 12:50:10,612 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:50:10,612 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:50:10,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 12:50:10,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:10,813 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:50:10,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:50:10,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1235425579, now seen corresponding path program 1 times [2024-10-24 12:50:10,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:50:10,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735158170] [2024-10-24 12:50:10,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:10,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:50:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:50:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:50:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:50:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:50:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:50:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 12:50:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:50:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 12:50:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 12:50:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 12:50:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-10-24 12:50:12,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:12,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735158170] [2024-10-24 12:50:12,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735158170] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:12,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843908613] [2024-10-24 12:50:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:12,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:12,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:12,426 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 12:50:12,427 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 12:50:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:12,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-24 12:50:12,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:50:13,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 12:50:13,385 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-24 12:50:13,386 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:50:13,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843908613] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:50:13,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:50:13,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2024-10-24 12:50:13,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239395769] [2024-10-24 12:50:13,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:50:13,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:50:13,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:13,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:50:13,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-10-24 12:50:13,389 INFO L87 Difference]: Start difference. First operand 114 states and 152 transitions. Second operand has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-24 12:50:18,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:22,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:26,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:31,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:35,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:39,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:43,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:43,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:50:43,260 INFO L93 Difference]: Finished difference Result 274 states and 370 transitions. [2024-10-24 12:50:43,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 12:50:43,261 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 100 [2024-10-24 12:50:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:50:43,263 INFO L225 Difference]: With dead ends: 274 [2024-10-24 12:50:43,263 INFO L226 Difference]: Without dead ends: 179 [2024-10-24 12:50:43,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-10-24 12:50:43,265 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 118 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 6 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.7s IncrementalHoareTripleChecker+Time [2024-10-24 12:50:43,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 822 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 495 Invalid, 7 Unknown, 0 Unchecked, 29.7s Time] [2024-10-24 12:50:43,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-24 12:50:43,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 172. [2024-10-24 12:50:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 113 states have internal predecessors, (137), 45 states have call successors, (45), 14 states have call predecessors, (45), 16 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2024-10-24 12:50:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 230 transitions. [2024-10-24 12:50:43,302 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 230 transitions. Word has length 100 [2024-10-24 12:50:43,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:50:43,302 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 230 transitions. [2024-10-24 12:50:43,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-24 12:50:43,303 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 230 transitions. [2024-10-24 12:50:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 12:50:43,304 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:50:43,304 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:50:43,326 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 12:50:43,504 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 12:50:43,505 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:50:43,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:50:43,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2007132195, now seen corresponding path program 1 times [2024-10-24 12:50:43,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:50:43,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529334545] [2024-10-24 12:50:43,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:43,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:50:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:44,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:44,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:50:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:44,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:50:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:44,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:44,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:50:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:44,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 12:50:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:44,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 12:50:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:44,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:50:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:44,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 12:50:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:45,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 12:50:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:45,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-24 12:50:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:45,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 12:50:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-10-24 12:50:45,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:45,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529334545] [2024-10-24 12:50:45,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529334545] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:45,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615879830] [2024-10-24 12:50:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:45,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:45,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:45,099 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 12:50:45,100 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 12:50:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:45,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-24 12:50:45,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:50:45,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 12:50:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-24 12:50:46,081 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:50:46,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615879830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:50:46,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:50:46,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2024-10-24 12:50:46,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939913429] [2024-10-24 12:50:46,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:50:46,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:50:46,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:46,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:50:46,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-10-24 12:50:46,083 INFO L87 Difference]: Start difference. First operand 172 states and 230 transitions. Second operand has 12 states, 10 states have (on average 6.0) internal successors, (60), 11 states have internal predecessors, (60), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-24 12:50:51,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:55,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:59,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:51:04,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:51:08,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:51:12,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:51:16,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:51:16,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:51:16,321 INFO L93 Difference]: Finished difference Result 321 states and 432 transitions. [2024-10-24 12:51:16,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 12:51:16,322 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.0) internal successors, (60), 11 states have internal predecessors, (60), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 104 [2024-10-24 12:51:16,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:51:16,324 INFO L225 Difference]: With dead ends: 321 [2024-10-24 12:51:16,324 INFO L226 Difference]: Without dead ends: 179 [2024-10-24 12:51:16,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-10-24 12:51:16,327 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 115 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 10 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2024-10-24 12:51:16,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 842 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 562 Invalid, 7 Unknown, 0 Unchecked, 30.1s Time] [2024-10-24 12:51:16,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-24 12:51:16,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 172. [2024-10-24 12:51:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 113 states have internal predecessors, (137), 45 states have call successors, (45), 14 states have call predecessors, (45), 16 states have return successors, (47), 44 states have call predecessors, (47), 43 states have call successors, (47) [2024-10-24 12:51:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 229 transitions. [2024-10-24 12:51:16,345 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 229 transitions. Word has length 104 [2024-10-24 12:51:16,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:51:16,345 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 229 transitions. [2024-10-24 12:51:16,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.0) internal successors, (60), 11 states have internal predecessors, (60), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-24 12:51:16,346 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 229 transitions. [2024-10-24 12:51:16,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-24 12:51:16,348 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:51:16,348 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:51:16,372 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 12:51:16,549 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 12:51:16,549 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:51:16,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:51:16,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1632160981, now seen corresponding path program 2 times [2024-10-24 12:51:16,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:51:16,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097332003] [2024-10-24 12:51:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:51:16,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:51:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:17,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:51:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:17,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:51:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:17,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:51:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:17,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:51:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:17,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:51:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:17,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 12:51:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:17,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 12:51:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:17,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:51:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:17,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:51:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:17,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 12:51:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:17,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 12:51:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:17,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-24 12:51:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:51:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-24 12:51:17,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:51:17,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097332003] [2024-10-24 12:51:17,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097332003] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:51:17,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014623790] [2024-10-24 12:51:17,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:51:17,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:51:17,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:51:17,935 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 12:51:17,935 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 12:51:18,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:51:18,482 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:51:18,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-24 12:51:18,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:51:18,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 12:51:19,209 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-24 12:51:19,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:51:19,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014623790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:51:19,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:51:19,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2024-10-24 12:51:19,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293063475] [2024-10-24 12:51:19,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:51:19,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 12:51:19,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:51:19,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 12:51:19,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-10-24 12:51:19,212 INFO L87 Difference]: Start difference. First operand 172 states and 229 transitions. Second operand has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 7 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12)