./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 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-simple/recursified_nested_2.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 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 03:49:24,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 03:49:24,868 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 03:49:24,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 03:49:24,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 03:49:24,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 03:49:24,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 03:49:24,895 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 03:49:24,895 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 03:49:24,898 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 03:49:24,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 03:49:24,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 03:49:24,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 03:49:24,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 03:49:24,899 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 03:49:24,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 03:49:24,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 03:49:24,900 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 03:49:24,901 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 03:49:24,901 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 03:49:24,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 03:49:24,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 03:49:24,902 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 03:49:24,902 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 03:49:24,902 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 03:49:24,902 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 03:49:24,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 03:49:24,902 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 03:49:24,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 03:49:24,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 03:49:24,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 03:49:24,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 03:49:24,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:49:24,903 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 03:49:24,904 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 03:49:24,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 03:49:24,904 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 03:49:24,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 03:49:24,904 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 03:49:24,904 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 03:49:24,904 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 03:49:24,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 03:49:24,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 03:49:25,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 03:49:25,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 03:49:25,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 03:49:25,116 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 03:49:25,116 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 03:49:25,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-13 03:49:26,371 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 03:49:26,534 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 03:49:26,535 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-13 03:49:26,548 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/58da178bb/e084ce1d785e4953abdb8c7e1592357c/FLAGdf0f28ec7 [2024-09-13 03:49:26,928 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/58da178bb/e084ce1d785e4953abdb8c7e1592357c [2024-09-13 03:49:26,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 03:49:26,932 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 03:49:26,933 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 03:49:26,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 03:49:26,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 03:49:26,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:49:26" (1/1) ... [2024-09-13 03:49:26,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7140ea0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:26, skipping insertion in model container [2024-09-13 03:49:26,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:49:26" (1/1) ... [2024-09-13 03:49:26,955 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 03:49:27,087 WARN L247 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-simple/recursified_nested_2.c[1611,1624] [2024-09-13 03:49:27,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:49:27,108 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 03:49:27,123 WARN L247 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-simple/recursified_nested_2.c[1611,1624] [2024-09-13 03:49:27,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:49:27,138 INFO L204 MainTranslator]: Completed translation [2024-09-13 03:49:27,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27 WrapperNode [2024-09-13 03:49:27,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 03:49:27,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 03:49:27,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 03:49:27,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 03:49:27,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27" (1/1) ... [2024-09-13 03:49:27,154 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27" (1/1) ... [2024-09-13 03:49:27,159 INFO L138 Inliner]: procedures = 13, calls = 29, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 03:49:27,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 03:49:27,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 03:49:27,160 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 03:49:27,160 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 03:49:27,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27" (1/1) ... [2024-09-13 03:49:27,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27" (1/1) ... [2024-09-13 03:49:27,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27" (1/1) ... [2024-09-13 03:49:27,180 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 6, 6]. 43 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 1, 1]. The 4 writes are split as follows [0, 2, 2]. [2024-09-13 03:49:27,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27" (1/1) ... [2024-09-13 03:49:27,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27" (1/1) ... [2024-09-13 03:49:27,184 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27" (1/1) ... [2024-09-13 03:49:27,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27" (1/1) ... [2024-09-13 03:49:27,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27" (1/1) ... [2024-09-13 03:49:27,189 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27" (1/1) ... [2024-09-13 03:49:27,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 03:49:27,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 03:49:27,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 03:49:27,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 03:49:27,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27" (1/1) ... [2024-09-13 03:49:27,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:49:27,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:49:27,222 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) [2024-09-13 03:49:27,228 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 [2024-09-13 03:49:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 03:49:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 03:49:27,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 03:49:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 03:49:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-13 03:49:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-13 03:49:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 03:49:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-13 03:49:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-13 03:49:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-13 03:49:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 03:49:27,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 03:49:27,261 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2024-09-13 03:49:27,261 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2024-09-13 03:49:27,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 03:49:27,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 03:49:27,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-13 03:49:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-13 03:49:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-13 03:49:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2024-09-13 03:49:27,263 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2024-09-13 03:49:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 03:49:27,331 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 03:49:27,333 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 03:49:27,468 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-13 03:49:27,468 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 03:49:27,488 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 03:49:27,488 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 03:49:27,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:49:27 BoogieIcfgContainer [2024-09-13 03:49:27,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 03:49:27,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 03:49:27,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 03:49:27,493 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 03:49:27,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 03:49:26" (1/3) ... [2024-09-13 03:49:27,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4502552f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:49:27, skipping insertion in model container [2024-09-13 03:49:27,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:49:27" (2/3) ... [2024-09-13 03:49:27,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4502552f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:49:27, skipping insertion in model container [2024-09-13 03:49:27,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:49:27" (3/3) ... [2024-09-13 03:49:27,496 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_2.c [2024-09-13 03:49:27,510 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 03:49:27,511 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 03:49:27,557 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 03:49:27,563 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;@69eb3eeb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 03:49:27,563 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 03:49:27,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 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) [2024-09-13 03:49:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-13 03:49:27,584 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:49:27,585 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:49:27,585 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:49:27,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:27,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1880927793, now seen corresponding path program 1 times [2024-09-13 03:49:27,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:49:27,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441718454] [2024-09-13 03:49:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:49:27,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:49:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:27,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:49:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:27,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:49:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:49:28,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:49:28,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441718454] [2024-09-13 03:49:28,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441718454] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:49:28,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:49:28,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-13 03:49:28,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208075370] [2024-09-13 03:49:28,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:49:28,073 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 03:49:28,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:49:28,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 03:49:28,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 03:49:28,094 INFO L87 Difference]: Start difference. First operand has 27 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 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 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 03:49:28,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:49:28,216 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-09-13 03:49:28,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 03:49:28,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-09-13 03:49:28,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:49:28,227 INFO L225 Difference]: With dead ends: 40 [2024-09-13 03:49:28,227 INFO L226 Difference]: Without dead ends: 27 [2024-09-13 03:49:28,229 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 [2024-09-13 03:49:28,233 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:49:28,233 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 63 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:49:28,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-13 03:49:28,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-09-13 03:49:28,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-13 03:49:28,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-09-13 03:49:28,265 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2024-09-13 03:49:28,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:49:28,265 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-09-13 03:49:28,265 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 03:49:28,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:28,266 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-09-13 03:49:28,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-13 03:49:28,268 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:49:28,268 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, 1] [2024-09-13 03:49:28,268 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 03:49:28,268 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:49:28,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:28,269 INFO L85 PathProgramCache]: Analyzing trace with hash 259605890, now seen corresponding path program 1 times [2024-09-13 03:49:28,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:49:28,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911559300] [2024-09-13 03:49:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:49:28,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:49:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:28,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:49:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:28,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:49:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:28,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:28,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 03:49:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 03:49:28,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:49:28,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911559300] [2024-09-13 03:49:28,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911559300] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:49:28,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:49:28,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-13 03:49:28,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921123917] [2024-09-13 03:49:28,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:49:28,579 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 03:49:28,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:49:28,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 03:49:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-13 03:49:28,582 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 03:49:28,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:49:28,682 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2024-09-13 03:49:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 03:49:28,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2024-09-13 03:49:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:49:28,685 INFO L225 Difference]: With dead ends: 46 [2024-09-13 03:49:28,685 INFO L226 Difference]: Without dead ends: 27 [2024-09-13 03:49:28,686 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-13 03:49:28,688 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:49:28,688 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 64 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:49:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-13 03:49:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-13 03:49:28,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-13 03:49:28,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-13 03:49:28,697 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 25 [2024-09-13 03:49:28,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:49:28,698 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-13 03:49:28,698 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 03:49:28,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:28,698 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-13 03:49:28,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-13 03:49:28,699 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:49:28,699 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:49:28,699 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 03:49:28,699 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:49:28,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:28,700 INFO L85 PathProgramCache]: Analyzing trace with hash 889705653, now seen corresponding path program 1 times [2024-09-13 03:49:28,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:49:28,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326018837] [2024-09-13 03:49:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:49:28,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:49:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:28,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:49:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:28,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:49:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:29,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:29,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:29,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 03:49:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-13 03:49:29,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:49:29,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326018837] [2024-09-13 03:49:29,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326018837] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:49:29,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993834526] [2024-09-13 03:49:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:49:29,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:29,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:49:29,211 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) [2024-09-13 03:49:29,212 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 03:49:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:29,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-13 03:49:29,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:49:29,350 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 [2024-09-13 03:49:29,534 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 25 treesize of output 13 [2024-09-13 03:49:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-13 03:49:29,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:49:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 03:49:30,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993834526] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:49:30,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:49:30,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-09-13 03:49:30,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224408637] [2024-09-13 03:49:30,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:49:30,015 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-13 03:49:30,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:49:30,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-13 03:49:30,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-09-13 03:49:30,018 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 23 states, 17 states have (on average 2.0) internal successors, (34), 19 states have internal predecessors, (34), 8 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (10), 4 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-13 03:49:30,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:49:30,223 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2024-09-13 03:49:30,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 03:49:30,224 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 2.0) internal successors, (34), 19 states have internal predecessors, (34), 8 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (10), 4 states have call predecessors, (10), 8 states have call successors, (10) Word has length 30 [2024-09-13 03:49:30,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:49:30,224 INFO L225 Difference]: With dead ends: 50 [2024-09-13 03:49:30,224 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 03:49:30,225 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2024-09-13 03:49:30,226 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:49:30,226 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 109 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:49:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 03:49:30,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-13 03:49:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-13 03:49:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-09-13 03:49:30,239 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 30 [2024-09-13 03:49:30,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:49:30,239 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-09-13 03:49:30,240 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 2.0) internal successors, (34), 19 states have internal predecessors, (34), 8 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (10), 4 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-13 03:49:30,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:30,240 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-09-13 03:49:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-13 03:49:30,241 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:49:30,241 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:49:30,254 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 03:49:30,441 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:30,442 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:49:30,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:30,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1706437626, now seen corresponding path program 2 times [2024-09-13 03:49:30,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:49:30,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665685654] [2024-09-13 03:49:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:49:30,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:49:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:30,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:49:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:30,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:49:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:30,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:30,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:30,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:30,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-13 03:49:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-13 03:49:31,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:49:31,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665685654] [2024-09-13 03:49:31,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665685654] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:49:31,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681156208] [2024-09-13 03:49:31,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:49:31,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:31,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:49:31,004 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) [2024-09-13 03:49:31,006 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 03:49:31,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:49:31,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:49:31,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-13 03:49:31,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:49:31,079 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 [2024-09-13 03:49:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-13 03:49:31,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:49:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 03:49:31,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681156208] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:49:31,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:49:31,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 26 [2024-09-13 03:49:31,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406736994] [2024-09-13 03:49:31,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:49:31,548 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-13 03:49:31,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:49:31,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-13 03:49:31,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2024-09-13 03:49:31,550 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 26 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 10 states have call successors, (13), 6 states have call predecessors, (13), 9 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) [2024-09-13 03:49:31,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:49:31,862 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2024-09-13 03:49:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 03:49:31,862 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 10 states have call successors, (13), 6 states have call predecessors, (13), 9 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) Word has length 35 [2024-09-13 03:49:31,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:49:31,863 INFO L225 Difference]: With dead ends: 56 [2024-09-13 03:49:31,863 INFO L226 Difference]: Without dead ends: 33 [2024-09-13 03:49:31,864 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2024-09-13 03:49:31,864 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:49:31,865 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 87 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:49:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-13 03:49:31,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-13 03:49:31,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2024-09-13 03:49:31,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-13 03:49:31,871 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2024-09-13 03:49:31,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:49:31,871 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-13 03:49:31,871 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 10 states have call successors, (13), 6 states have call predecessors, (13), 9 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) [2024-09-13 03:49:31,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:31,872 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-13 03:49:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-13 03:49:31,873 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:49:31,873 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:49:31,886 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 03:49:32,078 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:32,079 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:49:32,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1700016267, now seen corresponding path program 3 times [2024-09-13 03:49:32,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:49:32,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683452286] [2024-09-13 03:49:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:49:32,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:49:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:32,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:49:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:32,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:49:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:32,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:32,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:32,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:32,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:32,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:49:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:32,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:32,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:32,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:32,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:32,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:49:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 8 proven. 75 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-13 03:49:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:49:32,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683452286] [2024-09-13 03:49:32,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683452286] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:49:32,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784427270] [2024-09-13 03:49:32,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:49:32,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:32,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:49:32,821 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) [2024-09-13 03:49:32,823 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 03:49:32,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 03:49:32,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:49:32,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-13 03:49:32,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:49:32,908 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 [2024-09-13 03:49:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-09-13 03:49:33,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:49:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-09-13 03:49:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784427270] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:49:33,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:49:33,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 34 [2024-09-13 03:49:33,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378938949] [2024-09-13 03:49:33,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:49:33,714 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-13 03:49:33,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:49:33,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-13 03:49:33,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2024-09-13 03:49:33,716 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 34 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 28 states have internal predecessors, (50), 13 states have call successors, (19), 7 states have call predecessors, (19), 12 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2024-09-13 03:49:34,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:49:34,132 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2024-09-13 03:49:34,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-13 03:49:34,132 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 28 states have internal predecessors, (50), 13 states have call successors, (19), 7 states have call predecessors, (19), 12 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) Word has length 66 [2024-09-13 03:49:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:49:34,133 INFO L225 Difference]: With dead ends: 64 [2024-09-13 03:49:34,133 INFO L226 Difference]: Without dead ends: 37 [2024-09-13 03:49:34,134 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=286, Invalid=1694, Unknown=0, NotChecked=0, Total=1980 [2024-09-13 03:49:34,135 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 43 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:49:34,135 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 148 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:49:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-13 03:49:34,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-13 03:49:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 10 states have return successors, (12), 10 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-13 03:49:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-09-13 03:49:34,142 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 66 [2024-09-13 03:49:34,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:49:34,142 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-09-13 03:49:34,142 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 28 states have internal predecessors, (50), 13 states have call successors, (19), 7 states have call predecessors, (19), 12 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2024-09-13 03:49:34,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-09-13 03:49:34,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-09-13 03:49:34,144 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:49:34,144 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:49:34,165 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-13 03:49:34,348 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:34,349 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:49:34,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:34,349 INFO L85 PathProgramCache]: Analyzing trace with hash -515831498, now seen corresponding path program 4 times [2024-09-13 03:49:34,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:49:34,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058659969] [2024-09-13 03:49:34,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:49:34,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:49:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:34,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:49:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:34,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:49:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:49:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:49:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:49:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 12 proven. 212 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-09-13 03:49:35,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:49:35,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058659969] [2024-09-13 03:49:35,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058659969] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:49:35,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562412251] [2024-09-13 03:49:35,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:49:35,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:35,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:49:35,543 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) [2024-09-13 03:49:35,546 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 03:49:35,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:49:35,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:49:35,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-13 03:49:35,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:49:35,666 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 [2024-09-13 03:49:35,819 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 25 treesize of output 13 [2024-09-13 03:49:35,836 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 15 treesize of output 7 [2024-09-13 03:49:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2024-09-13 03:49:35,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:49:36,172 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 7 treesize of output 3 [2024-09-13 03:49:36,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562412251] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:49:36,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 03:49:36,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2024-09-13 03:49:36,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893119747] [2024-09-13 03:49:36,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 03:49:36,379 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-13 03:49:36,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:49:36,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-13 03:49:36,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2024-09-13 03:49:36,380 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 24 states, 19 states have (on average 2.263157894736842) internal successors, (43), 21 states have internal predecessors, (43), 9 states have call successors, (15), 4 states have call predecessors, (15), 11 states have return successors, (16), 11 states have call predecessors, (16), 9 states have call successors, (16) [2024-09-13 03:49:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:49:36,747 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2024-09-13 03:49:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-13 03:49:36,748 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 2.263157894736842) internal successors, (43), 21 states have internal predecessors, (43), 9 states have call successors, (15), 4 states have call predecessors, (15), 11 states have return successors, (16), 11 states have call predecessors, (16), 9 states have call successors, (16) Word has length 107 [2024-09-13 03:49:36,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:49:36,749 INFO L225 Difference]: With dead ends: 75 [2024-09-13 03:49:36,749 INFO L226 Difference]: Without dead ends: 44 [2024-09-13 03:49:36,750 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=222, Invalid=1338, Unknown=0, NotChecked=0, Total=1560 [2024-09-13 03:49:36,750 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 31 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:49:36,750 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 99 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:49:36,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-13 03:49:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-09-13 03:49:36,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 12 states have return successors, (15), 13 states have call predecessors, (15), 5 states have call successors, (15) [2024-09-13 03:49:36,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2024-09-13 03:49:36,757 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 107 [2024-09-13 03:49:36,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:49:36,758 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2024-09-13 03:49:36,758 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 2.263157894736842) internal successors, (43), 21 states have internal predecessors, (43), 9 states have call successors, (15), 4 states have call predecessors, (15), 11 states have return successors, (16), 11 states have call predecessors, (16), 9 states have call successors, (16) [2024-09-13 03:49:36,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:36,758 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2024-09-13 03:49:36,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-09-13 03:49:36,760 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:49:36,760 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 15, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:49:36,774 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 03:49:36,960 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:36,960 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:49:36,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:36,961 INFO L85 PathProgramCache]: Analyzing trace with hash -313299501, now seen corresponding path program 1 times [2024-09-13 03:49:36,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:49:36,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600461062] [2024-09-13 03:49:36,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:49:36,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:49:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:37,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:49:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:37,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:49:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:37,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 03:49:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 03:49:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 03:49:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 14 proven. 307 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2024-09-13 03:49:38,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:49:38,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600461062] [2024-09-13 03:49:38,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600461062] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:49:38,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586778268] [2024-09-13 03:49:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:49:38,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:38,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:49:38,606 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) [2024-09-13 03:49:38,608 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 03:49:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:38,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-13 03:49:38,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:49:38,736 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 [2024-09-13 03:49:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2024-09-13 03:49:38,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:49:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2024-09-13 03:49:39,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586778268] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:49:39,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:49:39,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 18] total 41 [2024-09-13 03:49:39,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536089829] [2024-09-13 03:49:39,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:49:39,906 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-13 03:49:39,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:49:39,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-13 03:49:39,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2024-09-13 03:49:39,907 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 41 states, 32 states have (on average 1.78125) internal successors, (57), 34 states have internal predecessors, (57), 15 states have call successors, (21), 8 states have call predecessors, (21), 16 states have return successors, (24), 17 states have call predecessors, (24), 15 states have call successors, (24) [2024-09-13 03:49:40,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:49:40,353 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2024-09-13 03:49:40,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 03:49:40,357 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 32 states have (on average 1.78125) internal successors, (57), 34 states have internal predecessors, (57), 15 states have call successors, (21), 8 states have call predecessors, (21), 16 states have return successors, (24), 17 states have call predecessors, (24), 15 states have call successors, (24) Word has length 122 [2024-09-13 03:49:40,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:49:40,358 INFO L225 Difference]: With dead ends: 80 [2024-09-13 03:49:40,358 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 03:49:40,359 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=406, Invalid=2456, Unknown=0, NotChecked=0, Total=2862 [2024-09-13 03:49:40,359 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 47 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:49:40,360 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 178 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:49:40,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 03:49:40,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-13 03:49:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 13 states have return successors, (15), 13 states have call predecessors, (15), 5 states have call successors, (15) [2024-09-13 03:49:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-09-13 03:49:40,370 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 122 [2024-09-13 03:49:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:49:40,371 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-09-13 03:49:40,371 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 32 states have (on average 1.78125) internal successors, (57), 34 states have internal predecessors, (57), 15 states have call successors, (21), 8 states have call predecessors, (21), 16 states have return successors, (24), 17 states have call predecessors, (24), 15 states have call successors, (24) [2024-09-13 03:49:40,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-09-13 03:49:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-09-13 03:49:40,372 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:49:40,373 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:49:40,385 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 03:49:40,576 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 03:49:40,576 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:49:40,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:40,577 INFO L85 PathProgramCache]: Analyzing trace with hash -525253801, now seen corresponding path program 5 times [2024-09-13 03:49:40,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:49:40,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749567218] [2024-09-13 03:49:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:49:40,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:49:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:41,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:49:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:41,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:49:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:41,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:41,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:41,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 11 proven. 27 refuted. 0 times theorem prover too weak. 1808 trivial. 0 not checked. [2024-09-13 03:49:42,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:49:42,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749567218] [2024-09-13 03:49:42,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749567218] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:49:42,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771465764] [2024-09-13 03:49:42,871 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:49:42,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:42,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:49:42,874 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) [2024-09-13 03:49:42,880 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 03:49:43,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-09-13 03:49:43,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:49:43,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-13 03:49:43,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:49:43,615 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 [2024-09-13 03:49:43,775 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 25 treesize of output 13 [2024-09-13 03:49:43,795 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 15 treesize of output 7 [2024-09-13 03:49:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1819 trivial. 0 not checked. [2024-09-13 03:49:43,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:49:44,168 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 7 treesize of output 3 [2024-09-13 03:49:44,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771465764] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:49:44,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 03:49:44,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 26 [2024-09-13 03:49:44,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770869462] [2024-09-13 03:49:44,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 03:49:44,355 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-13 03:49:44,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:49:44,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-13 03:49:44,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2024-09-13 03:49:44,356 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 26 states, 20 states have (on average 1.8) internal successors, (36), 22 states have internal predecessors, (36), 10 states have call successors, (14), 4 states have call predecessors, (14), 10 states have return successors, (14), 13 states have call predecessors, (14), 10 states have call successors, (14) [2024-09-13 03:49:44,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:49:44,590 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2024-09-13 03:49:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-13 03:49:44,591 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.8) internal successors, (36), 22 states have internal predecessors, (36), 10 states have call successors, (14), 4 states have call predecessors, (14), 10 states have return successors, (14), 13 states have call predecessors, (14), 10 states have call successors, (14) Word has length 178 [2024-09-13 03:49:44,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:49:44,592 INFO L225 Difference]: With dead ends: 58 [2024-09-13 03:49:44,592 INFO L226 Difference]: Without dead ends: 55 [2024-09-13 03:49:44,593 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=262, Invalid=1070, Unknown=0, NotChecked=0, Total=1332 [2024-09-13 03:49:44,593 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:49:44,593 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 80 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:49:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-13 03:49:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2024-09-13 03:49:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 15 states have return successors, (19), 16 states have call predecessors, (19), 5 states have call successors, (19) [2024-09-13 03:49:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2024-09-13 03:49:44,603 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 178 [2024-09-13 03:49:44,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:49:44,605 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2024-09-13 03:49:44,606 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.8) internal successors, (36), 22 states have internal predecessors, (36), 10 states have call successors, (14), 4 states have call predecessors, (14), 10 states have return successors, (14), 13 states have call predecessors, (14), 10 states have call successors, (14) [2024-09-13 03:49:44,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:44,606 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2024-09-13 03:49:44,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-09-13 03:49:44,607 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:49:44,607 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:49:44,624 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 03:49:44,808 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:44,808 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:49:44,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:44,808 INFO L85 PathProgramCache]: Analyzing trace with hash -525251879, now seen corresponding path program 2 times [2024-09-13 03:49:44,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:49:44,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463579557] [2024-09-13 03:49:44,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:49:44,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:49:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:45,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:49:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:45,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:49:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:46,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 1810 trivial. 0 not checked. [2024-09-13 03:49:47,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:49:47,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463579557] [2024-09-13 03:49:47,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463579557] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:49:47,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436105643] [2024-09-13 03:49:47,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:49:47,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:47,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:49:47,035 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:49:47,036 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 03:49:47,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:49:47,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:49:47,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-13 03:49:47,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:49:47,225 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 [2024-09-13 03:49:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2024-09-13 03:49:47,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:49:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1788 trivial. 0 not checked. [2024-09-13 03:49:48,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436105643] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:49:48,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:49:48,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 22] total 42 [2024-09-13 03:49:48,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497670971] [2024-09-13 03:49:48,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:49:48,731 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-13 03:49:48,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:49:48,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-13 03:49:48,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1417, Unknown=0, NotChecked=0, Total=1722 [2024-09-13 03:49:48,733 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 42 states, 32 states have (on average 1.59375) internal successors, (51), 34 states have internal predecessors, (51), 17 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) [2024-09-13 03:49:49,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:49:49,081 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2024-09-13 03:49:49,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 03:49:49,081 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 32 states have (on average 1.59375) internal successors, (51), 34 states have internal predecessors, (51), 17 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) Word has length 178 [2024-09-13 03:49:49,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:49:49,083 INFO L225 Difference]: With dead ends: 52 [2024-09-13 03:49:49,083 INFO L226 Difference]: Without dead ends: 47 [2024-09-13 03:49:49,083 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 395 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=444, Invalid=2006, Unknown=0, NotChecked=0, Total=2450 [2024-09-13 03:49:49,084 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:49:49,084 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 178 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:49:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-13 03:49:49,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-13 03:49:49,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 6 states have call successors, (6), 4 states have call predecessors, (6), 15 states have return successors, (17), 15 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-13 03:49:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2024-09-13 03:49:49,093 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 178 [2024-09-13 03:49:49,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:49:49,094 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2024-09-13 03:49:49,094 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 32 states have (on average 1.59375) internal successors, (51), 34 states have internal predecessors, (51), 17 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) [2024-09-13 03:49:49,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:49,095 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-09-13 03:49:49,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-13 03:49:49,097 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:49:49,097 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:49:49,111 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 03:49:49,297 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:49,298 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:49:49,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:49:49,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1830036763, now seen corresponding path program 6 times [2024-09-13 03:49:49,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:49:49,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427250202] [2024-09-13 03:49:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:49:49,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:49:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:50,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:49:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:50,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:49:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:50,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:50,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:50,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:50,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:50,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:50,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:50,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:50,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:51,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:49:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:49:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:49:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 937 proven. 34 refuted. 0 times theorem prover too weak. 3232 trivial. 0 not checked. [2024-09-13 03:49:52,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:49:52,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427250202] [2024-09-13 03:49:52,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427250202] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:49:52,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509210619] [2024-09-13 03:49:52,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:49:52,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:49:52,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:49:52,829 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:49:52,830 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 03:50:00,726 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-09-13 03:50:00,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:50:00,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-09-13 03:50:00,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:50:00,805 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 [2024-09-13 03:50:00,982 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 [2024-09-13 03:50:01,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1171 proven. 81 refuted. 0 times theorem prover too weak. 2951 trivial. 0 not checked. [2024-09-13 03:50:01,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:50:01,881 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 25 treesize of output 21 [2024-09-13 03:50:02,281 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 25 treesize of output 21 [2024-09-13 03:50:02,594 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 25 treesize of output 21 [2024-09-13 03:50:02,833 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 25 treesize of output 21 [2024-09-13 03:50:03,079 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 25 treesize of output 21 [2024-09-13 03:50:03,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509210619] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:50:03,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 03:50:03,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 25 [2024-09-13 03:50:03,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207867781] [2024-09-13 03:50:03,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 03:50:03,570 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 03:50:03,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:50:03,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 03:50:03,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2024-09-13 03:50:03,571 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 24 states have internal predecessors, (45), 9 states have call successors, (17), 3 states have call predecessors, (17), 11 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-13 03:50:04,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:50:04,017 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-09-13 03:50:04,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-13 03:50:04,017 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 24 states have internal predecessors, (45), 9 states have call successors, (17), 3 states have call predecessors, (17), 11 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) Word has length 260 [2024-09-13 03:50:04,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:50:04,018 INFO L225 Difference]: With dead ends: 52 [2024-09-13 03:50:04,018 INFO L226 Difference]: Without dead ends: 49 [2024-09-13 03:50:04,019 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=1608, Unknown=0, NotChecked=0, Total=1806 [2024-09-13 03:50:04,019 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:50:04,020 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 226 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:50:04,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-13 03:50:04,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-09-13 03:50:04,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.08) internal successors, (27), 27 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 15 states have return successors, (17), 15 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-13 03:50:04,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2024-09-13 03:50:04,027 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 260 [2024-09-13 03:50:04,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:50:04,028 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2024-09-13 03:50:04,028 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 24 states have internal predecessors, (45), 9 states have call successors, (17), 3 states have call predecessors, (17), 11 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-13 03:50:04,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:50:04,028 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2024-09-13 03:50:04,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-13 03:50:04,030 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:50:04,030 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:50:04,055 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-13 03:50:04,230 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:50:04,231 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:50:04,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:50:04,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1830038685, now seen corresponding path program 3 times [2024-09-13 03:50:04,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:50:04,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268152340] [2024-09-13 03:50:04,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:50:04,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:50:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:04,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:50:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:04,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:50:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:50:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:50:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:05,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:50:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:50:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:50:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:50:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 03:50:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:50:06,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2024-09-13 03:50:06,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:50:06,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268152340] [2024-09-13 03:50:06,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268152340] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:50:06,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440259106] [2024-09-13 03:50:06,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:50:06,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:50:06,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:50:06,499 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:50:06,500 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 03:50:09,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 37 check-sat command(s) [2024-09-13 03:50:09,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:50:09,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-13 03:50:09,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:50:09,856 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 25 treesize of output 13 [2024-09-13 03:50:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1186 proven. 18 refuted. 0 times theorem prover too weak. 2999 trivial. 0 not checked. [2024-09-13 03:50:09,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:50:10,627 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 03:50:10,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-09-13 03:50:10,894 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 03:50:10,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-09-13 03:50:11,089 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 03:50:11,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-09-13 03:50:11,244 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 03:50:11,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-09-13 03:50:11,356 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 03:50:11,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-09-13 03:50:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 4159 trivial. 0 not checked. [2024-09-13 03:50:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440259106] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:50:19,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:50:19,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 26 [2024-09-13 03:50:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955023498] [2024-09-13 03:50:19,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:50:19,977 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-13 03:50:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:50:19,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-13 03:50:19,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=565, Unknown=2, NotChecked=0, Total=650 [2024-09-13 03:50:19,978 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 26 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 20 states have internal predecessors, (39), 8 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2024-09-13 03:50:24,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 03:50:24,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:50:24,321 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2024-09-13 03:50:24,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 03:50:24,322 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 20 states have internal predecessors, (39), 8 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 260 [2024-09-13 03:50:24,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:50:24,323 INFO L225 Difference]: With dead ends: 51 [2024-09-13 03:50:24,323 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 03:50:24,323 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 607 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=176, Invalid=1012, Unknown=2, NotChecked=0, Total=1190 [2024-09-13 03:50:24,324 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:50:24,324 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 60 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 327 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2024-09-13 03:50:24,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 03:50:24,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 03:50:24,325 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) [2024-09-13 03:50:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 03:50:24,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 260 [2024-09-13 03:50:24,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:50:24,326 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 03:50:24,326 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 20 states have internal predecessors, (39), 8 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2024-09-13 03:50:24,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:50:24,326 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 03:50:24,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 03:50:24,328 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 03:50:24,349 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-13 03:50:24,529 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 03:50:24,532 INFO L408 BasicCegarLoop]: Path program histogram: [6, 3, 1, 1] [2024-09-13 03:50:24,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 03:50:25,722 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 03:50:25,731 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] [2024-09-13 03:50:25,732 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-13 03:50:25,733 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-13 03:50:25,733 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-09-13 03:50:25,733 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] [2024-09-13 03:50:25,733 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-13 03:50:25,733 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-13 03:50:25,733 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-09-13 03:50:25,734 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] [2024-09-13 03:50:25,734 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-13 03:50:25,737 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-13 03:50:25,738 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] [2024-09-13 03:50:25,738 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-13 03:50:25,738 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] [2024-09-13 03:50:25,738 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-13 03:50:25,738 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-13 03:50:25,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 03:50:25 BoogieIcfgContainer [2024-09-13 03:50:25,738 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 03:50:25,739 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 03:50:25,739 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 03:50:25,739 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 03:50:25,740 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:49:27" (3/4) ... [2024-09-13 03:50:25,741 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 03:50:25,744 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 03:50:25,744 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_20_to_21_0 [2024-09-13 03:50:25,745 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 03:50:25,745 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_21_to_21_0 [2024-09-13 03:50:25,747 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-09-13 03:50:25,748 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-13 03:50:25,748 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 03:50:25,748 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 03:50:25,818 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 03:50:25,819 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 03:50:25,819 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 03:50:25,820 INFO L158 Benchmark]: Toolchain (without parser) took 58888.09ms. Allocated memory was 163.6MB in the beginning and 1.0GB in the end (delta: 872.4MB). Free memory was 91.3MB in the beginning and 701.2MB in the end (delta: -609.9MB). Peak memory consumption was 263.6MB. Max. memory is 16.1GB. [2024-09-13 03:50:25,820 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 163.6MB. Free memory is still 114.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 03:50:25,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.07ms. Allocated memory is still 163.6MB. Free memory was 91.0MB in the beginning and 80.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-13 03:50:25,820 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.28ms. Allocated memory is still 163.6MB. Free memory was 80.0MB in the beginning and 79.1MB in the end (delta: 954.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 03:50:25,821 INFO L158 Benchmark]: Boogie Preprocessor took 30.90ms. Allocated memory is still 163.6MB. Free memory was 79.1MB in the beginning and 77.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 03:50:25,821 INFO L158 Benchmark]: RCFGBuilder took 297.74ms. Allocated memory is still 163.6MB. Free memory was 77.0MB in the beginning and 62.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 03:50:25,823 INFO L158 Benchmark]: TraceAbstraction took 58247.90ms. Allocated memory was 163.6MB in the beginning and 1.0GB in the end (delta: 872.4MB). Free memory was 62.0MB in the beginning and 705.4MB in the end (delta: -643.4MB). Peak memory consumption was 230.0MB. Max. memory is 16.1GB. [2024-09-13 03:50:25,823 INFO L158 Benchmark]: Witness Printer took 80.49ms. Allocated memory is still 1.0GB. Free memory was 705.4MB in the beginning and 701.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 03:50:25,824 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 163.6MB. Free memory is still 114.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.07ms. Allocated memory is still 163.6MB. Free memory was 91.0MB in the beginning and 80.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.28ms. Allocated memory is still 163.6MB. Free memory was 80.0MB in the beginning and 79.1MB in the end (delta: 954.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.90ms. Allocated memory is still 163.6MB. Free memory was 79.1MB in the beginning and 77.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 297.74ms. Allocated memory is still 163.6MB. Free memory was 77.0MB in the beginning and 62.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 58247.90ms. Allocated memory was 163.6MB in the beginning and 1.0GB in the end (delta: 872.4MB). Free memory was 62.0MB in the beginning and 705.4MB in the end (delta: -643.4MB). Peak memory consumption was 230.0MB. Max. memory is 16.1GB. * Witness Printer took 80.49ms. Allocated memory is still 1.0GB. Free memory was 705.4MB in the beginning and 701.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 69]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.0s, OverallIterations: 11, TraceHistogramMax: 42, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 331 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 325 mSDsluCounter, 1292 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1121 mSDsCounter, 232 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3090 IncrementalHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 232 mSolverCounterUnsat, 171 mSDtfsCounter, 3090 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2671 GetRequests, 2301 SyntacticMatches, 7 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3851 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=8, InterpolantAutomatonStates: 166, 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, 11 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 11.7s SatisfiabilityAnalysisTime, 34.7s InterpolantComputationTime, 2511 NumberOfCodeBlocks, 2458 NumberOfCodeBlocksAsserted, 118 NumberOfCheckSat, 3176 ConstructedInterpolants, 38 QuantifiedInterpolants, 10781 SizeOfPredicates, 107 NumberOfNonLiveVariables, 5010 ConjunctsInSsa, 525 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 32994/34038 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 RESULT: Ultimate proved your program to be correct! [2024-09-13 03:50:25,865 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