./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 1d5fa637 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-1d5fa63-m [2024-09-13 09:52:46,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 09:52:46,587 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 09:52:46,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 09:52:46,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 09:52:46,619 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 09:52:46,620 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 09:52:46,620 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 09:52:46,620 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 09:52:46,621 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 09:52:46,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 09:52:46,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 09:52:46,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 09:52:46,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 09:52:46,622 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 09:52:46,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 09:52:46,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 09:52:46,623 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 09:52:46,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 09:52:46,625 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 09:52:46,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 09:52:46,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 09:52:46,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 09:52:46,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 09:52:46,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 09:52:46,626 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 09:52:46,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 09:52:46,626 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 09:52:46,627 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 09:52:46,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 09:52:46,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 09:52:46,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 09:52:46,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:52:46,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 09:52:46,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 09:52:46,631 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 09:52:46,631 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 09:52:46,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 09:52:46,632 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 09:52:46,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 09:52:46,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 09:52:46,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 09:52:46,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 09:52:46,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 09:52:46,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 09:52:46,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 09:52:46,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 09:52:46,842 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 09:52:46,843 INFO L431 ainManager$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 09:52:48,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 09:52:48,318 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 09:52:48,319 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-13 09:52:48,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c09142334/4ea33d343acf45a08c1237568ac3b008/FLAGedca47463 [2024-09-13 09:52:48,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c09142334/4ea33d343acf45a08c1237568ac3b008 [2024-09-13 09:52:48,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 09:52:48,346 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 09:52:48,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 09:52:48,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 09:52:48,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 09:52:48,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113f49fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48, skipping insertion in model container [2024-09-13 09:52:48,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,372 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 09:52:48,529 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 09:52:48,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:52:48,557 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 09:52:48,577 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 09:52:48,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:52:48,592 INFO L204 MainTranslator]: Completed translation [2024-09-13 09:52:48,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48 WrapperNode [2024-09-13 09:52:48,595 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 09:52:48,596 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 09:52:48,596 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 09:52:48,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 09:52:48,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,617 INFO L138 Inliner]: procedures = 13, calls = 29, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 09:52:48,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 09:52:48,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 09:52:48,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 09:52:48,618 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 09:52:48,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,629 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,640 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 09:52:48,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,647 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,648 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,649 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,649 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,650 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 09:52:48,651 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 09:52:48,651 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 09:52:48,651 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 09:52:48,652 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48" (1/1) ... [2024-09-13 09:52:48,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:52:48,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:52:48,689 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 09:52:48,699 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 09:52:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 09:52:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 09:52:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 09:52:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 09:52:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-13 09:52:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-13 09:52:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 09:52:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-13 09:52:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-13 09:52:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-13 09:52:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 09:52:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 09:52:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2024-09-13 09:52:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2024-09-13 09:52:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 09:52:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 09:52:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-13 09:52:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-13 09:52:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-13 09:52:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2024-09-13 09:52:48,753 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2024-09-13 09:52:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 09:52:48,817 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 09:52:48,819 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 09:52:48,972 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-13 09:52:48,972 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 09:52:48,989 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 09:52:48,990 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 09:52:48,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:52:48 BoogieIcfgContainer [2024-09-13 09:52:48,990 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 09:52:48,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 09:52:48,992 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 09:52:48,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 09:52:48,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 09:52:48" (1/3) ... [2024-09-13 09:52:48,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416bd383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:52:48, skipping insertion in model container [2024-09-13 09:52:48,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:52:48" (2/3) ... [2024-09-13 09:52:48,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416bd383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:52:48, skipping insertion in model container [2024-09-13 09:52:48,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:52:48" (3/3) ... [2024-09-13 09:52:48,998 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_2.c [2024-09-13 09:52:49,011 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 09:52:49,011 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 09:52:49,051 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 09:52:49,057 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;@1fdb84c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 09:52:49,061 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 09:52:49,065 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 09:52:49,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-13 09:52:49,076 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:52:49,077 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:52:49,077 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:52:49,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:52:49,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1880927793, now seen corresponding path program 1 times [2024-09-13 09:52:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:52:49,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438442631] [2024-09-13 09:52:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:52:49,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:52:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:49,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:52:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:49,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:52:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:49,488 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 09:52:49,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:52:49,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438442631] [2024-09-13 09:52:49,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438442631] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:52:49,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:52:49,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-13 09:52:49,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713820357] [2024-09-13 09:52:49,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:52:49,495 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 09:52:49,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:52:49,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 09:52:49,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 09:52:49,513 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 09:52:49,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:52:49,694 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-09-13 09:52:49,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 09:52:49,697 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 09:52:49,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:52:49,702 INFO L225 Difference]: With dead ends: 40 [2024-09-13 09:52:49,702 INFO L226 Difference]: Without dead ends: 27 [2024-09-13 09:52:49,704 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 09:52:49,706 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 09:52:49,707 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 09:52:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-13 09:52:49,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-09-13 09:52:49,734 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 09:52:49,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-09-13 09:52:49,735 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2024-09-13 09:52:49,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:52:49,736 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-09-13 09:52:49,736 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 09:52:49,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:52:49,737 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-09-13 09:52:49,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-13 09:52:49,738 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:52:49,738 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 09:52:49,738 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 09:52:49,738 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:52:49,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:52:49,739 INFO L85 PathProgramCache]: Analyzing trace with hash 259605890, now seen corresponding path program 1 times [2024-09-13 09:52:49,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:52:49,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56636033] [2024-09-13 09:52:49,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:52:49,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:52:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:49,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:52:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:49,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:52:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:49,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:49,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 09:52:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:49,940 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 09:52:49,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:52:49,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56636033] [2024-09-13 09:52:49,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56636033] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:52:49,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:52:49,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-13 09:52:49,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73776295] [2024-09-13 09:52:49,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:52:49,943 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 09:52:49,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:52:49,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 09:52:49,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-13 09:52:49,946 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 09:52:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:52:50,058 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2024-09-13 09:52:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 09:52:50,059 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 09:52:50,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:52:50,060 INFO L225 Difference]: With dead ends: 46 [2024-09-13 09:52:50,060 INFO L226 Difference]: Without dead ends: 27 [2024-09-13 09:52:50,060 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-13 09:52:50,061 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 09:52:50,062 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 09:52:50,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-13 09:52:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-13 09:52:50,067 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 09:52:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-13 09:52:50,068 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 25 [2024-09-13 09:52:50,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:52:50,069 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-13 09:52:50,069 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 09:52:50,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:52:50,069 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-13 09:52:50,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-13 09:52:50,070 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:52:50,070 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 09:52:50,070 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 09:52:50,071 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:52:50,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:52:50,071 INFO L85 PathProgramCache]: Analyzing trace with hash 889705653, now seen corresponding path program 1 times [2024-09-13 09:52:50,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:52:50,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099376069] [2024-09-13 09:52:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:52:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:52:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:50,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:52:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:50,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:52:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:50,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:50,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:50,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 09:52:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:50,560 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 09:52:50,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:52:50,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099376069] [2024-09-13 09:52:50,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099376069] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:52:50,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964878022] [2024-09-13 09:52:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:52:50,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:52:50,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:52:50,564 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 09:52:50,565 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 09:52:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:50,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-13 09:52:50,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:52:50,661 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 09:52:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 09:52:50,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:52:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 09:52:51,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964878022] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:52:51,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:52:51,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 25 [2024-09-13 09:52:51,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955185672] [2024-09-13 09:52:51,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:52:51,269 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 09:52:51,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:52:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 09:52:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-09-13 09:52:51,270 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 25 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 10 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-13 09:52:51,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:52:51,560 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2024-09-13 09:52:51,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 09:52:51,561 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 10 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) Word has length 30 [2024-09-13 09:52:51,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:52:51,561 INFO L225 Difference]: With dead ends: 52 [2024-09-13 09:52:51,561 INFO L226 Difference]: Without dead ends: 31 [2024-09-13 09:52:51,562 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2024-09-13 09:52:51,563 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:52:51,563 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 85 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:52:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-13 09:52:51,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-13 09:52:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-13 09:52:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-09-13 09:52:51,578 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 30 [2024-09-13 09:52:51,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:52:51,578 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-09-13 09:52:51,578 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 10 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-13 09:52:51,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:52:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-09-13 09:52:51,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-13 09:52:51,580 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:52:51,580 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:52:51,597 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 09:52:51,780 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 09:52:51,781 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:52:51,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:52:51,781 INFO L85 PathProgramCache]: Analyzing trace with hash 282472211, now seen corresponding path program 2 times [2024-09-13 09:52:51,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:52:51,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952528552] [2024-09-13 09:52:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:52:51,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:52:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:52,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:52:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:52,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:52:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:52,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:52,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:52,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:52,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-13 09:52:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:52,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:52,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:52,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:52,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-13 09:52:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-13 09:52:52,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:52:52,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952528552] [2024-09-13 09:52:52,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952528552] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:52:52,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093343844] [2024-09-13 09:52:52,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 09:52:52,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:52:52,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:52:52,427 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 09:52:52,428 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 09:52:52,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 09:52:52,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:52:52,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-13 09:52:52,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:52:52,502 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 09:52:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-13 09:52:52,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:52:53,390 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 56 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-13 09:52:53,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093343844] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:52:53,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:52:53,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 14] total 29 [2024-09-13 09:52:53,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176035523] [2024-09-13 09:52:53,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:52:53,392 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-13 09:52:53,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:52:53,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-13 09:52:53,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2024-09-13 09:52:53,393 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 29 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 24 states have internal predecessors, (51), 9 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (18), 7 states have call predecessors, (18), 9 states have call successors, (18) [2024-09-13 09:52:53,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:52:53,610 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2024-09-13 09:52:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 09:52:53,612 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 24 states have internal predecessors, (51), 9 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (18), 7 states have call predecessors, (18), 9 states have call successors, (18) Word has length 56 [2024-09-13 09:52:53,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:52:53,617 INFO L225 Difference]: With dead ends: 60 [2024-09-13 09:52:53,617 INFO L226 Difference]: Without dead ends: 35 [2024-09-13 09:52:53,617 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 09:52:53,618 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:52:53,618 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 129 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:52:53,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-13 09:52:53,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-13 09:52:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 9 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2024-09-13 09:52:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-13 09:52:53,628 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2024-09-13 09:52:53,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:52:53,628 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-13 09:52:53,629 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 24 states have internal predecessors, (51), 9 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (18), 7 states have call predecessors, (18), 9 states have call successors, (18) [2024-09-13 09:52:53,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:52:53,629 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-13 09:52:53,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-13 09:52:53,631 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:52:53,631 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:52:53,648 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 09:52:53,831 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 09:52:53,832 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:52:53,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:52:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash -209044141, now seen corresponding path program 3 times [2024-09-13 09:52:53,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:52:53,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991473177] [2024-09-13 09:52:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:52:53,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:52:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:52:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:52:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 09:52:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 09:52:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 10 proven. 118 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-09-13 09:52:54,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:52:54,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991473177] [2024-09-13 09:52:54,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991473177] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:52:54,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265164910] [2024-09-13 09:52:54,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 09:52:54,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:52:54,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:52:54,871 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 09:52:54,886 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 09:52:54,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 09:52:54,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:52:54,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-13 09:52:54,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:52:54,970 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 09:52:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-09-13 09:52:55,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:52:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-09-13 09:52:55,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265164910] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:52:55,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:52:55,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 14] total 35 [2024-09-13 09:52:55,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892454875] [2024-09-13 09:52:55,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:52:55,803 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-13 09:52:55,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:52:55,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-13 09:52:55,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1031, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 09:52:55,804 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 35 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 29 states have internal predecessors, (51), 13 states have call successors, (19), 7 states have call predecessors, (19), 13 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-09-13 09:52:56,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:52:56,231 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2024-09-13 09:52:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 09:52:56,234 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 29 states have internal predecessors, (51), 13 states have call successors, (19), 7 states have call predecessors, (19), 13 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) Word has length 76 [2024-09-13 09:52:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:52:56,234 INFO L225 Difference]: With dead ends: 68 [2024-09-13 09:52:56,235 INFO L226 Difference]: Without dead ends: 39 [2024-09-13 09:52:56,235 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=319, Invalid=1843, Unknown=0, NotChecked=0, Total=2162 [2024-09-13 09:52:56,236 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 58 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 09:52:56,236 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 116 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 09:52:56,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-13 09:52:56,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-13 09:52:56,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 11 states have return successors, (13), 11 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-13 09:52:56,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-09-13 09:52:56,242 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 76 [2024-09-13 09:52:56,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:52:56,243 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-09-13 09:52:56,243 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 29 states have internal predecessors, (51), 13 states have call successors, (19), 7 states have call predecessors, (19), 13 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-09-13 09:52:56,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:52:56,244 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-09-13 09:52:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-09-13 09:52:56,244 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:52:56,245 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 09:52:56,258 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 09:52:56,448 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 09:52:56,449 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:52:56,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:52:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash -313301423, now seen corresponding path program 4 times [2024-09-13 09:52:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:52:56,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662179654] [2024-09-13 09:52:56,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:52:56,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:52:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:57,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:52:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:57,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:52:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:57,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:57,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:57,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:57,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:57,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:57,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:57,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 09:52:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 09:52:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:52:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 09:52:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:52:58,081 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 09:52:58,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:52:58,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662179654] [2024-09-13 09:52:58,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662179654] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:52:58,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644593054] [2024-09-13 09:52:58,100 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 09:52:58,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:52:58,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:52:58,102 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 09:52:58,103 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 09:52:58,245 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 09:52:58,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:52:58,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-09-13 09:52:58,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:52:58,264 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 09:52:58,609 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 346 proven. 35 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-09-13 09:52:58,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:53:00,840 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 6 proven. 414 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-09-13 09:53:00,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644593054] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:53:00,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:53:00,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 26] total 44 [2024-09-13 09:53:00,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247472926] [2024-09-13 09:53:00,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:53:00,841 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-13 09:53:00,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:53:00,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-13 09:53:00,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=1517, Unknown=0, NotChecked=0, Total=1892 [2024-09-13 09:53:00,847 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 44 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 36 states have internal predecessors, (63), 12 states have call successors, (25), 10 states have call predecessors, (25), 15 states have return successors, (27), 13 states have call predecessors, (27), 12 states have call successors, (27) [2024-09-13 09:53:01,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:53:01,214 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2024-09-13 09:53:01,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 09:53:01,215 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 36 states have internal predecessors, (63), 12 states have call successors, (25), 10 states have call predecessors, (25), 15 states have return successors, (27), 13 states have call predecessors, (27), 12 states have call successors, (27) Word has length 122 [2024-09-13 09:53:01,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:53:01,216 INFO L225 Difference]: With dead ends: 74 [2024-09-13 09:53:01,216 INFO L226 Difference]: Without dead ends: 41 [2024-09-13 09:53:01,217 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 257 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=564, Invalid=2088, Unknown=0, NotChecked=0, Total=2652 [2024-09-13 09:53:01,217 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 09:53:01,217 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 215 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 09:53:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-13 09:53:01,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-13 09:53:01,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 12 states have return successors, (14), 12 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-13 09:53:01,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2024-09-13 09:53:01,227 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 122 [2024-09-13 09:53:01,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:53:01,227 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2024-09-13 09:53:01,227 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 36 states have internal predecessors, (63), 12 states have call successors, (25), 10 states have call predecessors, (25), 15 states have return successors, (27), 13 states have call predecessors, (27), 12 states have call successors, (27) [2024-09-13 09:53:01,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:53:01,228 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2024-09-13 09:53:01,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-13 09:53:01,228 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:53:01,229 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 18, 18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:53:01,242 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 09:53:01,429 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 09:53:01,429 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:53:01,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:53:01,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1126624914, now seen corresponding path program 5 times [2024-09-13 09:53:01,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:53:01,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608628545] [2024-09-13 09:53:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:53:01,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:53:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:01,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:53:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:01,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:53:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2024-09-13 09:53:02,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:53:02,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608628545] [2024-09-13 09:53:02,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608628545] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:53:02,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961770100] [2024-09-13 09:53:02,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 09:53:02,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:53:02,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:53:02,741 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 09:53:02,749 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 09:53:03,137 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-13 09:53:03,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:53:03,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-13 09:53:03,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:53:03,164 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 09:53:03,417 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 36 treesize of output 13 [2024-09-13 09:53:03,435 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 09:53:03,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2024-09-13 09:53:03,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:53:03,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961770100] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:53:03,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 09:53:03,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 25 [2024-09-13 09:53:03,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047005632] [2024-09-13 09:53:03,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 09:53:03,842 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 09:53:03,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:53:03,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 09:53:03,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2024-09-13 09:53:03,843 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 25 states, 20 states have (on average 1.75) internal successors, (35), 21 states have internal predecessors, (35), 9 states have call successors, (13), 4 states have call predecessors, (13), 9 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-13 09:53:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:53:04,147 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2024-09-13 09:53:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-13 09:53:04,148 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.75) internal successors, (35), 21 states have internal predecessors, (35), 9 states have call successors, (13), 4 states have call predecessors, (13), 9 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) Word has length 137 [2024-09-13 09:53:04,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:53:04,152 INFO L225 Difference]: With dead ends: 56 [2024-09-13 09:53:04,152 INFO L226 Difference]: Without dead ends: 53 [2024-09-13 09:53:04,153 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2024-09-13 09:53:04,153 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 09:53:04,153 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 63 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 09:53:04,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-13 09:53:04,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2024-09-13 09:53:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 14 states have return successors, (18), 15 states have call predecessors, (18), 5 states have call successors, (18) [2024-09-13 09:53:04,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-09-13 09:53:04,160 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 137 [2024-09-13 09:53:04,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:53:04,161 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-09-13 09:53:04,161 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.75) internal successors, (35), 21 states have internal predecessors, (35), 9 states have call successors, (13), 4 states have call predecessors, (13), 9 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-13 09:53:04,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:53:04,161 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-09-13 09:53:04,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-13 09:53:04,162 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:53:04,162 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 18, 18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:53:04,181 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 09:53:04,362 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 09:53:04,363 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:53:04,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:53:04,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1126622992, now seen corresponding path program 1 times [2024-09-13 09:53:04,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:53:04,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846043817] [2024-09-13 09:53:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:53:04,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:53:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:04,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:53:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:04,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:53:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2024-09-13 09:53:05,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:53:05,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846043817] [2024-09-13 09:53:05,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846043817] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:53:05,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707920520] [2024-09-13 09:53:05,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:53:05,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:53:05,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:53:05,548 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 09:53:05,549 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 09:53:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:05,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-13 09:53:05,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:53:05,714 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 09:53:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2024-09-13 09:53:05,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:53:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2024-09-13 09:53:07,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707920520] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:53:07,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:53:07,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 18] total 37 [2024-09-13 09:53:07,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245246622] [2024-09-13 09:53:07,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:53:07,111 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-13 09:53:07,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:53:07,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-13 09:53:07,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1087, Unknown=0, NotChecked=0, Total=1332 [2024-09-13 09:53:07,113 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 37 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 30 states have internal predecessors, (46), 15 states have call successors, (19), 8 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 15 states have call successors, (19) [2024-09-13 09:53:07,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:53:07,386 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2024-09-13 09:53:07,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 09:53:07,387 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 30 states have internal predecessors, (46), 15 states have call successors, (19), 8 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 15 states have call successors, (19) Word has length 137 [2024-09-13 09:53:07,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:53:07,388 INFO L225 Difference]: With dead ends: 50 [2024-09-13 09:53:07,390 INFO L226 Difference]: Without dead ends: 45 [2024-09-13 09:53:07,391 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 300 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=368, Invalid=1524, Unknown=0, NotChecked=0, Total=1892 [2024-09-13 09:53:07,391 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:53:07,392 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 88 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:53:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-13 09:53:07,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-13 09:53:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 14 states have return successors, (16), 14 states have call predecessors, (16), 5 states have call successors, (16) [2024-09-13 09:53:07,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-09-13 09:53:07,407 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 137 [2024-09-13 09:53:07,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:53:07,407 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-09-13 09:53:07,407 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 30 states have internal predecessors, (46), 15 states have call successors, (19), 8 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 15 states have call successors, (19) [2024-09-13 09:53:07,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:53:07,408 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-09-13 09:53:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-09-13 09:53:07,411 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:53:07,411 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 30, 30, 30, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:53:07,425 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 09:53:07,612 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 09:53:07,612 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:53:07,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:53:07,613 INFO L85 PathProgramCache]: Analyzing trace with hash 842189810, now seen corresponding path program 6 times [2024-09-13 09:53:07,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:53:07,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892752665] [2024-09-13 09:53:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:53:07,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:53:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:08,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:53:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:08,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:53:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:09,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 2842 trivial. 0 not checked. [2024-09-13 09:53:10,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:53:10,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892752665] [2024-09-13 09:53:10,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892752665] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:53:10,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867389322] [2024-09-13 09:53:10,685 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 09:53:10,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:53:10,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:53:10,690 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 09:53:10,692 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 09:53:12,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-09-13 09:53:12,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:53:12,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 162 conjuncts are in the unsatisfiable core [2024-09-13 09:53:12,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:53:12,254 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 09:53:12,474 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 09:53:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 1122 proven. 101 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2024-09-13 09:53:12,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:53:13,535 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 09:53:13,882 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 09:53:14,262 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 09:53:14,528 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 09:53:15,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867389322] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:53:15,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 09:53:15,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18] total 37 [2024-09-13 09:53:15,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590110067] [2024-09-13 09:53:15,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 09:53:15,193 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-13 09:53:15,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:53:15,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-13 09:53:15,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1548, Unknown=0, NotChecked=0, Total=1722 [2024-09-13 09:53:15,194 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 37 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 35 states have internal predecessors, (55), 15 states have call successors, (19), 3 states have call predecessors, (19), 15 states have return successors, (23), 19 states have call predecessors, (23), 15 states have call successors, (23) [2024-09-13 09:53:16,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:53:16,224 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2024-09-13 09:53:16,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-13 09:53:16,224 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 35 states have internal predecessors, (55), 15 states have call successors, (19), 3 states have call predecessors, (19), 15 states have return successors, (23), 19 states have call predecessors, (23), 15 states have call successors, (23) Word has length 219 [2024-09-13 09:53:16,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:53:16,226 INFO L225 Difference]: With dead ends: 83 [2024-09-13 09:53:16,227 INFO L226 Difference]: Without dead ends: 79 [2024-09-13 09:53:16,228 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=627, Invalid=4775, Unknown=0, NotChecked=0, Total=5402 [2024-09-13 09:53:16,228 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 115 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 09:53:16,228 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 75 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 09:53:16,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-13 09:53:16,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2024-09-13 09:53:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 7 states have call successors, (7), 5 states have call predecessors, (7), 22 states have return successors, (38), 23 states have call predecessors, (38), 6 states have call successors, (38) [2024-09-13 09:53:16,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2024-09-13 09:53:16,239 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 219 [2024-09-13 09:53:16,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:53:16,240 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2024-09-13 09:53:16,240 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 35 states have internal predecessors, (55), 15 states have call successors, (19), 3 states have call predecessors, (19), 15 states have return successors, (23), 19 states have call predecessors, (23), 15 states have call successors, (23) [2024-09-13 09:53:16,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:53:16,240 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2024-09-13 09:53:16,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-09-13 09:53:16,242 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:53:16,242 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 33, 33, 33, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:53:16,258 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 09:53:16,445 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 09:53:16,446 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:53:16,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:53:16,446 INFO L85 PathProgramCache]: Analyzing trace with hash 121509823, now seen corresponding path program 2 times [2024-09-13 09:53:16,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:53:16,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804808701] [2024-09-13 09:53:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:53:16,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:53:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:17,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:53:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:17,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:53:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:18,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:18,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:18,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:18,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:18,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:18,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:18,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 09:53:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 09:53:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 09:53:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3430 backedges. 65 proven. 849 refuted. 0 times theorem prover too weak. 2516 trivial. 0 not checked. [2024-09-13 09:53:19,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:53:19,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804808701] [2024-09-13 09:53:19,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804808701] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:53:19,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687052675] [2024-09-13 09:53:19,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 09:53:19,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:53:19,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:53:19,200 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 09:53:19,208 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 09:53:19,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 09:53:19,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:53:19,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-13 09:53:19,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:53:19,507 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 09:53:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3430 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 3395 trivial. 0 not checked. [2024-09-13 09:53:19,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:53:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3430 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 3340 trivial. 0 not checked. [2024-09-13 09:53:22,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687052675] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:53:22,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:53:22,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 26] total 51 [2024-09-13 09:53:22,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615294437] [2024-09-13 09:53:22,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:53:22,803 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-13 09:53:22,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:53:22,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-13 09:53:22,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2202, Unknown=0, NotChecked=0, Total=2550 [2024-09-13 09:53:22,804 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 51 states, 40 states have (on average 1.65) internal successors, (66), 42 states have internal predecessors, (66), 19 states have call successors, (26), 10 states have call predecessors, (26), 21 states have return successors, (32), 25 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-13 09:53:23,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:53:23,551 INFO L93 Difference]: Finished difference Result 123 states and 161 transitions. [2024-09-13 09:53:23,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-13 09:53:23,551 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 40 states have (on average 1.65) internal successors, (66), 42 states have internal predecessors, (66), 19 states have call successors, (26), 10 states have call predecessors, (26), 21 states have return successors, (32), 25 states have call predecessors, (32), 19 states have call successors, (32) Word has length 234 [2024-09-13 09:53:23,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:53:23,552 INFO L225 Difference]: With dead ends: 123 [2024-09-13 09:53:23,552 INFO L226 Difference]: Without dead ends: 50 [2024-09-13 09:53:23,554 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 525 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=668, Invalid=3754, Unknown=0, NotChecked=0, Total=4422 [2024-09-13 09:53:23,554 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 74 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 09:53:23,554 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 132 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 09:53:23,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-13 09:53:23,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-13 09:53:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 29 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 15 states have return successors, (16), 15 states have call predecessors, (16), 6 states have call successors, (16) [2024-09-13 09:53:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2024-09-13 09:53:23,572 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 234 [2024-09-13 09:53:23,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:53:23,573 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2024-09-13 09:53:23,573 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 40 states have (on average 1.65) internal successors, (66), 42 states have internal predecessors, (66), 19 states have call successors, (26), 10 states have call predecessors, (26), 21 states have return successors, (32), 25 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-13 09:53:23,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:53:23,574 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2024-09-13 09:53:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-13 09:53:23,576 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:53:23,576 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 09:53:23,591 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 09:53:23,776 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 09:53:23,777 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:53:23,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:53:23,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1830038685, now seen corresponding path program 3 times [2024-09-13 09:53:23,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:53:23,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180051157] [2024-09-13 09:53:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:53:23,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:53:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:24,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:53:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:24,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:53:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:24,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:24,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:24,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:24,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:24,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:24,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:24,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:24,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:53:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:25,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:53:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:53:26,003 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 09:53:26,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:53:26,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180051157] [2024-09-13 09:53:26,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180051157] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:53:26,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679400558] [2024-09-13 09:53:26,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 09:53:26,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:53:26,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:53:26,006 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 09:53:26,009 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 09:53:28,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 37 check-sat command(s) [2024-09-13 09:53:28,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:53:28,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-13 09:53:28,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:53:28,973 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 36 treesize of output 13 [2024-09-13 09:53:29,033 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 09:53:29,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:53:29,975 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 09:53:29,975 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 44 treesize of output 32 [2024-09-13 09:53:30,346 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 09:53:30,347 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 44 treesize of output 32 [2024-09-13 09:53:30,630 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 09:53:30,630 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 44 treesize of output 32 [2024-09-13 09:53:30,833 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 09:53:30,833 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 44 treesize of output 32 [2024-09-13 09:53:30,958 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 09:53:30,959 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 44 treesize of output 32 [2024-09-13 09:53:31,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679400558] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:53:31,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 09:53:31,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2024-09-13 09:53:31,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519500835] [2024-09-13 09:53:31,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 09:53:31,285 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 09:53:31,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:53:31,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 09:53:31,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-09-13 09:53:31,285 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-09-13 09:53:35,450 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 09:53:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:53:35,563 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-09-13 09:53:35,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 09:53:35,564 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 260 [2024-09-13 09:53:35,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:53:35,566 INFO L225 Difference]: With dead ends: 54 [2024-09-13 09:53:35,566 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 09:53:35,566 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 379 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2024-09-13 09:53:35,567 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 38 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:53:35,567 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 40 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 211 Invalid, 3 Unknown, 0 Unchecked, 4.1s Time] [2024-09-13 09:53:35,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 09:53:35,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 09:53:35,567 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 09:53:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 09:53:35,568 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 260 [2024-09-13 09:53:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:53:35,568 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 09:53:35,568 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-09-13 09:53:35,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:53:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 09:53:35,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 09:53:35,572 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 09:53:35,591 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 09:53:35,774 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 09:53:35,777 INFO L408 BasicCegarLoop]: Path program histogram: [6, 3, 1, 1] [2024-09-13 09:53:35,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 09:53:43,087 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 09:53:43,096 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-13 09:53:43,096 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-13 09:53:43,097 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-13 09:53:43,097 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-13 09:53:43,097 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-13 09:53:43,097 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-13 09:53:43,097 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] [2024-09-13 09:53:43,097 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-09-13 09:53:43,097 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] [2024-09-13 09:53:43,098 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~a!base,]]] [2024-09-13 09:53:43,101 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-13 09:53:43,101 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: ArrayStoreExpression [2024-09-13 09:53:43,101 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-13 09:53:43,101 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-13 09:53:43,102 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-13 09:53:43,102 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-13 09:53:43,102 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-13 09:53:43,102 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-13 09:53:43,102 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-13 09:53:43,102 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-13 09:53:43,102 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-13 09:53:43,102 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-13 09:53:43,102 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-13 09:53:43,102 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-13 09:53:43,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 09:53:43 BoogieIcfgContainer [2024-09-13 09:53:43,103 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 09:53:43,103 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 09:53:43,103 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 09:53:43,103 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 09:53:43,104 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:52:48" (3/4) ... [2024-09-13 09:53:43,105 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 09:53:43,107 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 09:53:43,107 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_20_to_21_0 [2024-09-13 09:53:43,108 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 09:53:43,108 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_21_to_21_0 [2024-09-13 09:53:43,110 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-09-13 09:53:43,110 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-13 09:53:43,110 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 09:53:43,110 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 09:53:43,171 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 09:53:43,171 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 09:53:43,171 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 09:53:43,172 INFO L158 Benchmark]: Toolchain (without parser) took 54825.73ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 70.5MB in the beginning and 850.5MB in the end (delta: -780.0MB). Peak memory consumption was 269.7MB. Max. memory is 16.1GB. [2024-09-13 09:53:43,172 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:53:43,172 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.04ms. Allocated memory was 142.6MB in the beginning and 213.9MB in the end (delta: 71.3MB). Free memory was 70.2MB in the beginning and 186.0MB in the end (delta: -115.9MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2024-09-13 09:53:43,172 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.18ms. Allocated memory is still 213.9MB. Free memory was 186.0MB in the beginning and 185.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:53:43,173 INFO L158 Benchmark]: Boogie Preprocessor took 32.64ms. Allocated memory is still 213.9MB. Free memory was 185.0MB in the beginning and 182.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 09:53:43,173 INFO L158 Benchmark]: RCFGBuilder took 339.34ms. Allocated memory is still 213.9MB. Free memory was 182.9MB in the beginning and 168.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 09:53:43,173 INFO L158 Benchmark]: TraceAbstraction took 54110.94ms. Allocated memory was 213.9MB in the beginning and 1.2GB in the end (delta: 977.3MB). Free memory was 167.2MB in the beginning and 855.7MB in the end (delta: -688.6MB). Peak memory consumption was 699.2MB. Max. memory is 16.1GB. [2024-09-13 09:53:43,173 INFO L158 Benchmark]: Witness Printer took 68.24ms. Allocated memory is still 1.2GB. Free memory was 854.7MB in the beginning and 850.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 09:53:43,174 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.04ms. Allocated memory was 142.6MB in the beginning and 213.9MB in the end (delta: 71.3MB). Free memory was 70.2MB in the beginning and 186.0MB in the end (delta: -115.9MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.18ms. Allocated memory is still 213.9MB. Free memory was 186.0MB in the beginning and 185.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.64ms. Allocated memory is still 213.9MB. Free memory was 185.0MB in the beginning and 182.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 339.34ms. Allocated memory is still 213.9MB. Free memory was 182.9MB in the beginning and 168.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 54110.94ms. Allocated memory was 213.9MB in the beginning and 1.2GB in the end (delta: 977.3MB). Free memory was 167.2MB in the beginning and 855.7MB in the end (delta: -688.6MB). Peak memory consumption was 699.2MB. Max. memory is 16.1GB. * Witness Printer took 68.24ms. Allocated memory is still 1.2GB. Free memory was 854.7MB in the beginning and 850.5MB 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#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,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~b!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~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~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: ArrayStoreExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,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~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,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: 46.7s, OverallIterations: 11, TraceHistogramMax: 42, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 462 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 458 mSDsluCounter, 1070 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 920 mSDsCounter, 353 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3389 IncrementalHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 353 mSolverCounterUnsat, 150 mSDtfsCounter, 3389 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2721 GetRequests, 2292 SyntacticMatches, 12 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5912 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=9, InterpolantAutomatonStates: 180, 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, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 30.5s InterpolantComputationTime, 2581 NumberOfCodeBlocks, 2512 NumberOfCodeBlocksAsserted, 95 NumberOfCheckSat, 3210 ConstructedInterpolants, 34 QuantifiedInterpolants, 11941 SizeOfPredicates, 115 NumberOfNonLiveVariables, 5099 ConjunctsInSsa, 614 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 30568/32826 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 09:53:43,203 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE