./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --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 32bit --witnessprinter.graph.data.programhash ad27d809606deb561fe152191ab0a1443c0552410f06ac9bb9a7a7bf17dec4e9 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 15:23:53,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 15:23:53,146 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 15:23:53,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 15:23:53,151 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 15:23:53,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 15:23:53,173 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 15:23:53,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 15:23:53,174 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 15:23:53,176 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 15:23:53,177 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 15:23:53,177 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 15:23:53,177 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 15:23:53,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 15:23:53,178 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 15:23:53,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 15:23:53,179 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 15:23:53,179 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 15:23:53,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 15:23:53,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 15:23:53,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 15:23:53,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 15:23:53,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 15:23:53,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 15:23:53,180 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 15:23:53,180 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 15:23:53,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 15:23:53,181 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 15:23:53,181 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 15:23:53,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 15:23:53,181 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 15:23:53,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 15:23:53,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:23:53,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 15:23:53,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 15:23:53,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 15:23:53,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 15:23:53,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 15:23:53,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 15:23:53,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 15:23:53,182 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 15:23:53,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 15:23:53,183 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad27d809606deb561fe152191ab0a1443c0552410f06ac9bb9a7a7bf17dec4e9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 15:23:53,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 15:23:53,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 15:23:53,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 15:23:53,382 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 15:23:53,383 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 15:23:53,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c [2024-10-15 15:23:54,572 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 15:23:54,714 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 15:23:54,714 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c [2024-10-15 15:23:54,721 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/669228621/a5f2590c47a74ee39e1a6127746cab5b/FLAGa570aa518 [2024-10-15 15:23:54,734 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/669228621/a5f2590c47a74ee39e1a6127746cab5b [2024-10-15 15:23:54,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 15:23:54,737 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 15:23:54,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 15:23:54,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 15:23:54,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 15:23:54,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e6cf91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54, skipping insertion in model container [2024-10-15 15:23:54,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 15:23:54,899 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c[983,996] [2024-10-15 15:23:54,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:23:54,914 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 15:23:54,921 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c[983,996] [2024-10-15 15:23:54,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:23:54,937 INFO L204 MainTranslator]: Completed translation [2024-10-15 15:23:54,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54 WrapperNode [2024-10-15 15:23:54,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 15:23:54,939 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 15:23:54,939 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 15:23:54,939 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 15:23:54,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,948 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,952 INFO L138 Inliner]: procedures = 16, calls = 44, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 15:23:54,953 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 15:23:54,953 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 15:23:54,953 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 15:23:54,953 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 15:23:54,963 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,965 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,975 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 2, 4, 5, 10]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 2, 2, 2]. [2024-10-15 15:23:54,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,979 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,980 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,982 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 15:23:54,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 15:23:54,983 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 15:23:54,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 15:23:54,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54" (1/1) ... [2024-10-15 15:23:54,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:23:54,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:23:55,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 15:23:55,008 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 15:23:55,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 15:23:55,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 15:23:55,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 15:23:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 15:23:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 15:23:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-15 15:23:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-15 15:23:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-15 15:23:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-15 15:23:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 15:23:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 15:23:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-15 15:23:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-15 15:23:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-15 15:23:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 15:23:55,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 15:23:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 15:23:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 15:23:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 15:23:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 15:23:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-15 15:23:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-15 15:23:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-15 15:23:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-10-15 15:23:55,040 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-10-15 15:23:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 15:23:55,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 15:23:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-15 15:23:55,130 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 15:23:55,132 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 15:23:55,280 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-15 15:23:55,280 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 15:23:55,299 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 15:23:55,300 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-15 15:23:55,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:55 BoogieIcfgContainer [2024-10-15 15:23:55,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 15:23:55,302 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 15:23:55,302 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 15:23:55,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 15:23:55,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:23:54" (1/3) ... [2024-10-15 15:23:55,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7439b21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:55, skipping insertion in model container [2024-10-15 15:23:55,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:54" (2/3) ... [2024-10-15 15:23:55,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7439b21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:55, skipping insertion in model container [2024-10-15 15:23:55,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:55" (3/3) ... [2024-10-15 15:23:55,307 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps2-ll.c [2024-10-15 15:23:55,320 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 15:23:55,320 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 15:23:55,368 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 15:23:55,374 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=All, 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;@7673e0e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 15:23:55,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 15:23:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 15:23:55,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-15 15:23:55,382 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:23:55,382 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:23:55,382 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:23:55,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:23:55,386 INFO L85 PathProgramCache]: Analyzing trace with hash -216882462, now seen corresponding path program 1 times [2024-10-15 15:23:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:23:55,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427444763] [2024-10-15 15:23:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:23:55,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:23:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:23:55,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615348616] [2024-10-15 15:23:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:23:55,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:23:55,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:23:55,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:23:55,519 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 15:23:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:23:55,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-15 15:23:55,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:23:55,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-15 15:23:55,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-15 15:23:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:23:55,770 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 15:23:55,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:23:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427444763] [2024-10-15 15:23:55,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:23:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615348616] [2024-10-15 15:23:55,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615348616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:23:55,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:23:55,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-15 15:23:55,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418972947] [2024-10-15 15:23:55,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:23:55,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-15 15:23:55,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:23:55,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-15 15:23:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-15 15:23:55,798 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 15:23:55,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:23:55,950 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2024-10-15 15:23:55,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 15:23:55,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-10-15 15:23:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:23:55,958 INFO L225 Difference]: With dead ends: 58 [2024-10-15 15:23:55,958 INFO L226 Difference]: Without dead ends: 34 [2024-10-15 15:23:55,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-15 15:23:55,964 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 12 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:23:55,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 116 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:23:55,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-15 15:23:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-10-15 15:23:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-15 15:23:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-10-15 15:23:56,015 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 12 [2024-10-15 15:23:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:23:56,029 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-10-15 15:23:56,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 15:23:56,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:23:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-10-15 15:23:56,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-15 15:23:56,032 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:23:56,032 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:23:56,049 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 15:23:56,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-15 15:23:56,233 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:23:56,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:23:56,233 INFO L85 PathProgramCache]: Analyzing trace with hash 259702993, now seen corresponding path program 1 times [2024-10-15 15:23:56,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:23:56,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450142904] [2024-10-15 15:23:56,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:23:56,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:23:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:23:56,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091687911] [2024-10-15 15:23:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:23:56,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:23:56,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:23:56,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:23:56,281 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 15:23:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:23:56,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-10-15 15:23:56,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:23:56,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-15 15:23:56,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-15 15:23:56,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-15 15:23:56,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-15 15:23:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:23:56,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:23:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 15:23:56,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:23:56,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450142904] [2024-10-15 15:23:56,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:23:56,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091687911] [2024-10-15 15:23:56,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091687911] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:23:56,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 15:23:56,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2024-10-15 15:23:56,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904724900] [2024-10-15 15:23:56,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 15:23:56,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 15:23:56,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:23:56,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 15:23:56,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-10-15 15:23:56,797 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 8 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 15:23:57,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:23:57,165 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2024-10-15 15:23:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 15:23:57,167 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 8 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2024-10-15 15:23:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:23:57,170 INFO L225 Difference]: With dead ends: 61 [2024-10-15 15:23:57,170 INFO L226 Difference]: Without dead ends: 55 [2024-10-15 15:23:57,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-10-15 15:23:57,172 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:23:57,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 129 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:23:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-15 15:23:57,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2024-10-15 15:23:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 29 states have (on average 1.103448275862069) internal successors, (32), 31 states have internal predecessors, (32), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-10-15 15:23:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-10-15 15:23:57,186 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 22 [2024-10-15 15:23:57,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:23:57,186 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-10-15 15:23:57,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 8 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 15:23:57,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:23:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-10-15 15:23:57,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-15 15:23:57,187 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:23:57,188 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:23:57,201 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 15:23:57,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:23:57,392 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:23:57,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:23:57,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1228374235, now seen corresponding path program 1 times [2024-10-15 15:23:57,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:23:57,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277565131] [2024-10-15 15:23:57,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:23:57,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:23:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:23:57,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891845962] [2024-10-15 15:23:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:23:57,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:23:57,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:23:57,445 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:23:57,447 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 15:23:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:23:57,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-15 15:23:57,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:23:57,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-15 15:23:57,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-15 15:23:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:23:57,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 15:23:57,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:23:57,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277565131] [2024-10-15 15:23:57,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:23:57,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891845962] [2024-10-15 15:23:57,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891845962] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:23:57,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:23:57,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-15 15:23:57,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097730846] [2024-10-15 15:23:57,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:23:57,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-15 15:23:57,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:23:57,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-15 15:23:57,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-15 15:23:57,598 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 15:23:57,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:23:57,681 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2024-10-15 15:23:57,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 15:23:57,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2024-10-15 15:23:57,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:23:57,682 INFO L225 Difference]: With dead ends: 55 [2024-10-15 15:23:57,682 INFO L226 Difference]: Without dead ends: 47 [2024-10-15 15:23:57,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-15 15:23:57,683 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:23:57,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 52 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:23:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-15 15:23:57,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-15 15:23:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-10-15 15:23:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2024-10-15 15:23:57,694 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 22 [2024-10-15 15:23:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:23:57,695 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2024-10-15 15:23:57,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 15:23:57,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:23:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2024-10-15 15:23:57,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-15 15:23:57,698 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:23:57,698 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:23:57,710 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 15:23:57,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-15 15:23:57,902 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:23:57,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:23:57,902 INFO L85 PathProgramCache]: Analyzing trace with hash -364189453, now seen corresponding path program 1 times [2024-10-15 15:23:57,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:23:57,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253523400] [2024-10-15 15:23:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:23:57,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:23:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:23:57,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624260031] [2024-10-15 15:23:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:23:57,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:23:57,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:23:57,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:23:57,959 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 15:23:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:23:58,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-10-15 15:23:58,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:23:58,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-15 15:23:58,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-15 15:23:58,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-15 15:23:58,354 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 15:23:58,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2024-10-15 15:23:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-15 15:23:58,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:23:59,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:23:59,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253523400] [2024-10-15 15:23:59,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:23:59,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624260031] [2024-10-15 15:23:59,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624260031] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:23:59,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-15 15:23:59,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-10-15 15:23:59,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538689614] [2024-10-15 15:23:59,209 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-15 15:23:59,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 15:23:59,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:23:59,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 15:23:59,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-10-15 15:23:59,211 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 15:23:59,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:23:59,551 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2024-10-15 15:23:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-15 15:23:59,551 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 34 [2024-10-15 15:23:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:23:59,552 INFO L225 Difference]: With dead ends: 53 [2024-10-15 15:23:59,554 INFO L226 Difference]: Without dead ends: 43 [2024-10-15 15:23:59,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2024-10-15 15:23:59,555 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:23:59,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 67 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:23:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-15 15:23:59,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-10-15 15:23:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-10-15 15:23:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-10-15 15:23:59,573 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 34 [2024-10-15 15:23:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:23:59,574 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-10-15 15:23:59,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 15:23:59,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:23:59,574 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-10-15 15:23:59,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-15 15:23:59,575 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:23:59,575 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:23:59,593 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 15:23:59,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:23:59,776 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:23:59,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:23:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1780089717, now seen corresponding path program 2 times [2024-10-15 15:23:59,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:23:59,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235020485] [2024-10-15 15:23:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:23:59,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:23:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:23:59,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159185624] [2024-10-15 15:23:59,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:23:59,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:23:59,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:23:59,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:23:59,843 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 15:23:59,925 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:23:59,926 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:23:59,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 137 conjuncts are in the unsatisfiable core [2024-10-15 15:23:59,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:23:59,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-15 15:23:59,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-15 15:23:59,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-15 15:24:00,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-10-15 15:24:00,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-10-15 15:24:00,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 37 [2024-10-15 15:24:00,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2024-10-15 15:24:00,573 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-15 15:24:00,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:24:04,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:24:04,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235020485] [2024-10-15 15:24:04,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:24:04,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159185624] [2024-10-15 15:24:04,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159185624] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:24:04,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-15 15:24:04,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-10-15 15:24:04,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196329418] [2024-10-15 15:24:04,892 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-15 15:24:04,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 15:24:04,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:24:04,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 15:24:04,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=448, Unknown=1, NotChecked=0, Total=506 [2024-10-15 15:24:04,893 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 19 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 8 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 15:24:05,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:24:05,414 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2024-10-15 15:24:05,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 15:24:05,415 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 8 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 46 [2024-10-15 15:24:05,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:24:05,417 INFO L225 Difference]: With dead ends: 51 [2024-10-15 15:24:05,418 INFO L226 Difference]: Without dead ends: 45 [2024-10-15 15:24:05,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=114, Invalid=815, Unknown=1, NotChecked=0, Total=930 [2024-10-15 15:24:05,419 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:24:05,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 80 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 15:24:05,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-15 15:24:05,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-15 15:24:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2024-10-15 15:24:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-10-15 15:24:05,435 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 46 [2024-10-15 15:24:05,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:24:05,436 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-10-15 15:24:05,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 8 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 15:24:05,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:24:05,436 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-10-15 15:24:05,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-15 15:24:05,439 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:24:05,439 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:24:05,451 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 15:24:05,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:24:05,644 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:24:05,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:24:05,644 INFO L85 PathProgramCache]: Analyzing trace with hash -438461533, now seen corresponding path program 3 times [2024-10-15 15:24:05,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:24:05,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144028177] [2024-10-15 15:24:05,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:24:05,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:24:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:24:05,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889434209] [2024-10-15 15:24:05,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 15:24:05,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:24:05,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:24:05,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:24:05,701 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 15:24:05,834 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-15 15:24:05,834 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:24:05,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-10-15 15:24:05,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:24:05,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 15:24:05,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 15:24:06,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2024-10-15 15:24:06,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-10-15 15:24:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 20 proven. 28 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-15 15:24:06,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:24:06,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 108 [2024-10-15 15:24:06,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 90 [2024-10-15 15:24:07,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 108 [2024-10-15 15:24:07,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 90 [2024-10-15 15:24:07,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:24:07,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144028177] [2024-10-15 15:24:07,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:24:07,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889434209] [2024-10-15 15:24:07,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889434209] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:24:07,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-15 15:24:07,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-10-15 15:24:07,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111853052] [2024-10-15 15:24:07,499 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-15 15:24:07,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-15 15:24:07,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:24:07,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-15 15:24:07,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-10-15 15:24:07,500 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 16 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 6 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-15 15:24:07,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:24:07,700 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2024-10-15 15:24:07,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 15:24:07,701 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 6 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 58 [2024-10-15 15:24:07,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:24:07,701 INFO L225 Difference]: With dead ends: 45 [2024-10-15 15:24:07,701 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 15:24:07,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2024-10-15 15:24:07,702 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:24:07,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 60 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:24:07,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 15:24:07,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 15:24:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 15:24:07,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 15:24:07,703 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2024-10-15 15:24:07,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:24:07,703 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 15:24:07,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 6 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-15 15:24:07,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:24:07,704 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 15:24:07,704 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 15:24:07,707 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 15:24:07,720 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 15:24:07,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:24:07,910 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-10-15 15:24:07,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 15:24:09,195 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 15:24:09,200 WARN L156 FloydHoareUtils]: Requires clause for main contained old-variable. Original clause: (and (= |#memory_int#4| |old(#memory_int#4)|) (= |#memory_int#2| |old(#memory_int#2)|) (= |#memory_int#3| |old(#memory_int#3)|)) Eliminated clause: true [2024-10-15 15:24:09,203 WARN L156 FloydHoareUtils]: Requires clause for func_to_recursive_line_26_to_34_0 contained old-variable. Original clause: (and (= |#memory_int#4| |old(#memory_int#4)|) (= |#memory_int#2| |old(#memory_int#2)|) (= (let ((.cse0 (select (select |old(#memory_int#4)| |func_to_recursive_line_26_to_34_0_#in~y.base|) |func_to_recursive_line_26_to_34_0_#in~y.offset|))) (+ (* .cse0 .cse0) .cse0)) (* 2 (select (select |old(#memory_int#3)| |func_to_recursive_line_26_to_34_0_#in~x.base|) |func_to_recursive_line_26_to_34_0_#in~x.offset|))) (= |#memory_int#3| |old(#memory_int#3)|)) Eliminated clause: (= (* 2 (select (select |#memory_int#3| |func_to_recursive_line_26_to_34_0_#in~x.base|) |func_to_recursive_line_26_to_34_0_#in~x.offset|)) (let ((.cse0 (select (select |#memory_int#4| |func_to_recursive_line_26_to_34_0_#in~y.base|) |func_to_recursive_line_26_to_34_0_#in~y.offset|))) (+ (* .cse0 .cse0) .cse0))) [2024-10-15 15:24:09,207 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-10-15 15:24:09,207 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] [2024-10-15 15:24:09,208 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~x!base,]]] [2024-10-15 15:24:09,208 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 15:24:09,208 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] [2024-10-15 15:24:09,208 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-10-15 15:24:09,208 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 15:24:09,208 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] [2024-10-15 15:24:09,209 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-10-15 15:24:09,209 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 15:24:09,209 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] [2024-10-15 15:24:09,209 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-10-15 15:24:09,209 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-10-15 15:24:09,209 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] [2024-10-15 15:24:09,209 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~x!base,]]] [2024-10-15 15:24:09,209 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 15:24:09,209 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] [2024-10-15 15:24:09,209 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-10-15 15:24:09,210 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 15:24:09,210 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] [2024-10-15 15:24:09,210 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-10-15 15:24:09,210 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 15:24:09,210 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] [2024-10-15 15:24:09,210 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-10-15 15:24:09,210 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 15:24:09,210 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]] [2024-10-15 15:24:09,210 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]],[IdentifierExpression[#in~y!base,]]] [2024-10-15 15:24:09,211 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 15:24:09,211 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]] [2024-10-15 15:24:09,211 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]],[IdentifierExpression[#in~y!base,]]] [2024-10-15 15:24:09,211 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 15:24:09,211 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]] [2024-10-15 15:24:09,211 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]],[IdentifierExpression[#in~y!base,]]] [2024-10-15 15:24:09,211 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-10-15 15:24:09,211 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] [2024-10-15 15:24:09,211 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~x!base,]]] [2024-10-15 15:24:09,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:24:09 BoogieIcfgContainer [2024-10-15 15:24:09,213 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 15:24:09,214 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 15:24:09,214 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 15:24:09,214 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 15:24:09,214 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:55" (3/4) ... [2024-10-15 15:24:09,216 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 15:24:09,254 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-10-15 15:24:09,255 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 15:24:09,255 INFO L158 Benchmark]: Toolchain (without parser) took 14518.06ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 83.1MB in the beginning and 73.3MB in the end (delta: 9.8MB). Peak memory consumption was 80.8MB. Max. memory is 16.1GB. [2024-10-15 15:24:09,255 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:24:09,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.17ms. Allocated memory is still 151.0MB. Free memory was 82.8MB in the beginning and 114.5MB in the end (delta: -31.7MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2024-10-15 15:24:09,256 INFO L158 Benchmark]: Boogie Procedure Inliner took 14.16ms. Allocated memory is still 151.0MB. Free memory was 114.5MB in the beginning and 113.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:24:09,256 INFO L158 Benchmark]: Boogie Preprocessor took 29.35ms. Allocated memory is still 151.0MB. Free memory was 113.4MB in the beginning and 111.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:24:09,256 INFO L158 Benchmark]: RCFGBuilder took 317.58ms. Allocated memory is still 151.0MB. Free memory was 111.3MB in the beginning and 95.7MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-15 15:24:09,256 INFO L158 Benchmark]: TraceAbstraction took 13911.86ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 95.1MB in the beginning and 75.4MB in the end (delta: 19.7MB). Peak memory consumption was 100.6MB. Max. memory is 16.1GB. [2024-10-15 15:24:09,257 INFO L158 Benchmark]: Witness Printer took 40.73ms. Allocated memory is still 220.2MB. Free memory was 75.4MB in the beginning and 73.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:24:09,258 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.17ms. Allocated memory is still 151.0MB. Free memory was 82.8MB in the beginning and 114.5MB in the end (delta: -31.7MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 14.16ms. Allocated memory is still 151.0MB. Free memory was 114.5MB in the beginning and 113.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.35ms. Allocated memory is still 151.0MB. Free memory was 113.4MB in the beginning and 111.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 317.58ms. Allocated memory is still 151.0MB. Free memory was 111.3MB in the beginning and 95.7MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13911.86ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 95.1MB in the beginning and 75.4MB in the end (delta: 19.7MB). Peak memory consumption was 100.6MB. Max. memory is 16.1GB. * Witness Printer took 40.73ms. Allocated memory is still 220.2MB. Free memory was 75.4MB in the beginning and 73.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~x!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~x!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~x!base,]]] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 37]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.6s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 119 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 119 mSDsluCounter, 504 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 424 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 966 IncrementalHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 80 mSDtfsCounter, 966 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 286 GetRequests, 162 SyntacticMatches, 7 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=2, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 388 NumberOfCodeBlocks, 386 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 209 ConstructedInterpolants, 4 QuantifiedInterpolants, 2774 SizeOfPredicates, 116 NumberOfNonLiveVariables, 1528 ConjunctsInSsa, 448 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 82/144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 31]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-10-15 15:24:09,286 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE