./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_1-1.i --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 de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_loop-crafted/recursified_simple_array_index_value_1-1.i -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 affe6b2992f7714f4bd95d6011e70945dc7608cfcd3847461bdcd80eeea00f05 --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 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-18 16:42:30,960 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 16:42:31,016 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 16:42:31,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 16:42:31,021 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 16:42:31,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 16:42:31,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 16:42:31,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 16:42:31,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 16:42:31,048 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 16:42:31,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 16:42:31,049 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 16:42:31,049 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 16:42:31,052 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 16:42:31,052 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 16:42:31,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 16:42:31,052 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 16:42:31,053 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 16:42:31,053 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 16:42:31,053 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 16:42:31,053 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 16:42:31,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 16:42:31,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 16:42:31,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 16:42:31,054 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 16:42:31,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 16:42:31,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 16:42:31,055 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 16:42:31,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 16:42:31,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 16:42:31,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 16:42:31,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 16:42:31,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:42:31,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 16:42:31,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 16:42:31,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 16:42:31,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 16:42:31,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 16:42:31,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 16:42:31,058 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 16:42:31,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 16:42:31,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 16:42:31,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> affe6b2992f7714f4bd95d6011e70945dc7608cfcd3847461bdcd80eeea00f05 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 16:42:31,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 16:42:31,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 16:42:31,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 16:42:31,287 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 16:42:31,288 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 16:42:31,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_1-1.i [2024-09-18 16:42:32,547 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 16:42:32,706 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 16:42:32,706 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_1-1.i [2024-09-18 16:42:32,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/091ddcd2f/b5fc110b623043f082fdcb0f327f269e/FLAGb945c92e6 [2024-09-18 16:42:32,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/091ddcd2f/b5fc110b623043f082fdcb0f327f269e [2024-09-18 16:42:32,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 16:42:32,736 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 16:42:32,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 16:42:32,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 16:42:32,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 16:42:32,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:32,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a9074c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32, skipping insertion in model container [2024-09-18 16:42:32,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:32,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 16:42:32,884 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_loop-crafted/recursified_simple_array_index_value_1-1.i[1692,1705] [2024-09-18 16:42:32,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:42:32,905 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 16:42:32,913 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_loop-crafted/recursified_simple_array_index_value_1-1.i[1692,1705] [2024-09-18 16:42:32,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:42:32,939 INFO L204 MainTranslator]: Completed translation [2024-09-18 16:42:32,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32 WrapperNode [2024-09-18 16:42:32,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 16:42:32,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 16:42:32,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 16:42:32,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 16:42:32,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:32,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:32,960 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 16:42:32,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 16:42:32,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 16:42:32,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 16:42:32,961 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 16:42:32,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:32,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:32,973 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:32,989 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 3, 13]. 72 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 5 writes are split as follows [0, 1, 4]. [2024-09-18 16:42:32,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:32,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:32,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:32,998 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:33,001 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:33,002 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:33,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 16:42:33,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 16:42:33,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 16:42:33,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 16:42:33,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32" (1/1) ... [2024-09-18 16:42:33,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:42:33,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:42:33,042 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) [2024-09-18 16:42:33,047 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 [2024-09-18 16:42:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 16:42:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_32_to_33_0 [2024-09-18 16:42:33,077 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_32_to_33_0 [2024-09-18 16:42:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 16:42:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 16:42:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 16:42:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-18 16:42:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-18 16:42:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-18 16:42:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-18 16:42:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-18 16:42:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-18 16:42:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 16:42:33,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 16:42:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 16:42:33,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 16:42:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-18 16:42:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-18 16:42:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-18 16:42:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-18 16:42:33,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-18 16:42:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-18 16:42:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_36_to_40_0 [2024-09-18 16:42:33,080 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_36_to_40_0 [2024-09-18 16:42:33,139 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 16:42:33,140 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 16:42:33,251 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-18 16:42:33,252 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 16:42:33,264 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 16:42:33,264 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-18 16:42:33,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:42:33 BoogieIcfgContainer [2024-09-18 16:42:33,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 16:42:33,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 16:42:33,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 16:42:33,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 16:42:33,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 04:42:32" (1/3) ... [2024-09-18 16:42:33,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bb2655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:42:33, skipping insertion in model container [2024-09-18 16:42:33,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:42:32" (2/3) ... [2024-09-18 16:42:33,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bb2655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:42:33, skipping insertion in model container [2024-09-18 16:42:33,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:42:33" (3/3) ... [2024-09-18 16:42:33,271 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_simple_array_index_value_1-1.i [2024-09-18 16:42:33,282 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 16:42:33,282 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 16:42:33,316 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 16:42:33,321 INFO L336 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;@45de9d7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 16:42:33,321 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 16:42:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 19 states have (on average 1.263157894736842) internal successors, (24), 22 states have internal predecessors, (24), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-18 16:42:33,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-18 16:42:33,345 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:42:33,346 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:42:33,346 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:42:33,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:42:33,350 INFO L85 PathProgramCache]: Analyzing trace with hash -919097502, now seen corresponding path program 1 times [2024-09-18 16:42:33,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:42:33,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540755406] [2024-09-18 16:42:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:42:33,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:42:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:33,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:42:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:33,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:42:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 16:42:33,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:42:33,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540755406] [2024-09-18 16:42:33,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540755406] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:42:33,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:42:33,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-18 16:42:33,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996261404] [2024-09-18 16:42:33,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:42:33,914 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-18 16:42:33,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:42:33,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-18 16:42:33,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-18 16:42:33,938 INFO L87 Difference]: Start difference. First operand has 34 states, 19 states have (on average 1.263157894736842) internal successors, (24), 22 states have internal predecessors, (24), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-18 16:42:34,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:42:34,103 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2024-09-18 16:42:34,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 16:42:34,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-09-18 16:42:34,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:42:34,110 INFO L225 Difference]: With dead ends: 62 [2024-09-18 16:42:34,110 INFO L226 Difference]: Without dead ends: 30 [2024-09-18 16:42:34,112 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-18 16:42:34,114 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:42:34,115 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 34 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:42:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-18 16:42:34,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-18 16:42:34,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-18 16:42:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-09-18 16:42:34,147 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2024-09-18 16:42:34,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:42:34,147 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-09-18 16:42:34,147 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-18 16:42:34,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:42:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-09-18 16:42:34,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-18 16:42:34,149 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:42:34,149 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:42:34,149 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 16:42:34,149 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:42:34,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:42:34,150 INFO L85 PathProgramCache]: Analyzing trace with hash 614925112, now seen corresponding path program 1 times [2024-09-18 16:42:34,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:42:34,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956103962] [2024-09-18 16:42:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:42:34,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:42:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:34,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:42:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:34,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:42:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:34,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-18 16:42:34,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:42:34,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956103962] [2024-09-18 16:42:34,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956103962] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:42:34,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869240466] [2024-09-18 16:42:34,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:42:34,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:42:34,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:42:34,579 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) [2024-09-18 16:42:34,584 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 16:42:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:34,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-18 16:42:34,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:42:34,699 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 [2024-09-18 16:42:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-18 16:42:34,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:42:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 16:42:35,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869240466] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:42:35,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:42:35,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 23 [2024-09-18 16:42:35,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945315973] [2024-09-18 16:42:35,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:42:35,215 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-18 16:42:35,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:42:35,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-18 16:42:35,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-09-18 16:42:35,217 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 7 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-09-18 16:42:35,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:42:35,588 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2024-09-18 16:42:35,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-18 16:42:35,589 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 7 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 24 [2024-09-18 16:42:35,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:42:35,590 INFO L225 Difference]: With dead ends: 58 [2024-09-18 16:42:35,591 INFO L226 Difference]: Without dead ends: 41 [2024-09-18 16:42:35,592 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2024-09-18 16:42:35,593 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 44 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 16:42:35,594 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 36 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 16:42:35,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-18 16:42:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2024-09-18 16:42:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-18 16:42:35,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-09-18 16:42:35,606 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 24 [2024-09-18 16:42:35,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:42:35,607 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-09-18 16:42:35,607 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 7 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-09-18 16:42:35,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:42:35,608 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-09-18 16:42:35,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-18 16:42:35,609 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:42:35,609 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:42:35,627 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-18 16:42:35,809 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:42:35,810 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:42:35,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:42:35,811 INFO L85 PathProgramCache]: Analyzing trace with hash 197148466, now seen corresponding path program 2 times [2024-09-18 16:42:35,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:42:35,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544902242] [2024-09-18 16:42:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:42:35,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:42:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:36,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:42:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:36,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:42:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:36,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:36,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:37,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:37,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-18 16:42:37,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:42:37,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544902242] [2024-09-18 16:42:37,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544902242] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:42:37,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679155700] [2024-09-18 16:42:37,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:42:37,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:42:37,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:42:37,283 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) [2024-09-18 16:42:37,284 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 16:42:37,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:42:37,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:42:37,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-09-18 16:42:37,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:42:37,375 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 [2024-09-18 16:42:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-18 16:42:37,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:43:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 16:43:03,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679155700] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:43:03,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:43:03,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 22] total 47 [2024-09-18 16:43:03,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32578977] [2024-09-18 16:43:03,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:43:03,413 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-18 16:43:03,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:43:03,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-18 16:43:03,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1918, Unknown=6, NotChecked=0, Total=2162 [2024-09-18 16:43:03,414 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 47 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 40 states have internal predecessors, (49), 13 states have call successors, (16), 9 states have call predecessors, (16), 16 states have return successors, (16), 14 states have call predecessors, (16), 12 states have call successors, (16) [2024-09-18 16:43:35,669 WARN L293 SmtUtils]: Spent 28.14s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-18 16:43:40,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:43:44,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:43:48,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:43:52,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:43:56,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:44:00,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:44:28,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:44:32,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:44:36,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:44:40,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:44:44,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:44:48,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:44:52,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:44:56,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:00,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:04,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:08,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:12,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:16,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:20,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:24,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:28,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:32,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:36,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:40,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:44,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:48,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:52,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:45:56,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:46:00,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:46:28,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:46:32,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:46:36,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:46:40,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:46:44,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:46:48,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:46:52,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:46:56,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:47:00,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:47:04,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:47:08,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:47:12,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-18 16:47:16,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []