./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 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_loop-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 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-18 16:44:35,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 16:44:35,542 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 16:44:35,546 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 16:44:35,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 16:44:35,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 16:44:35,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 16:44:35,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 16:44:35,562 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 16:44:35,563 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 16:44:35,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 16:44:35,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 16:44:35,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 16:44:35,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 16:44:35,564 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 16:44:35,564 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 16:44:35,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 16:44:35,565 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 16:44:35,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 16:44:35,565 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 16:44:35,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 16:44:35,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 16:44:35,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 16:44:35,566 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 16:44:35,566 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 16:44:35,567 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 16:44:35,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 16:44:35,567 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 16:44:35,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 16:44:35,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 16:44:35,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 16:44:35,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 16:44:35,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:44:35,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 16:44:35,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 16:44:35,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 16:44:35,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 16:44:35,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 16:44:35,572 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 16:44:35,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 16:44:35,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 16:44:35,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 16:44:35,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 16:44:35,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 16:44:35,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 16:44:35,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 16:44:35,773 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 16:44:35,774 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 16:44:35,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-18 16:44:36,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 16:44:37,112 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 16:44:37,112 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-18 16:44:37,117 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/80952ebf1/9dd99d0aeb12445ca8bc6dafabf6111b/FLAG7d9e14787 [2024-09-18 16:44:37,126 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/80952ebf1/9dd99d0aeb12445ca8bc6dafabf6111b [2024-09-18 16:44:37,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 16:44:37,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 16:44:37,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 16:44:37,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 16:44:37,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 16:44:37,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd39710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37, skipping insertion in model container [2024-09-18 16:44:37,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,147 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 16:44:37,262 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2024-09-18 16:44:37,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:44:37,279 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 16:44:37,293 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2024-09-18 16:44:37,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:44:37,307 INFO L204 MainTranslator]: Completed translation [2024-09-18 16:44:37,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37 WrapperNode [2024-09-18 16:44:37,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 16:44:37,308 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 16:44:37,309 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 16:44:37,309 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 16:44:37,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,323 INFO L138 Inliner]: procedures = 13, calls = 29, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 16:44:37,323 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 16:44:37,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 16:44:37,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 16:44:37,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 16:44:37,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,331 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,341 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]. [2024-09-18 16:44:37,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,341 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,348 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 16:44:37,352 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 16:44:37,353 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 16:44:37,353 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 16:44:37,353 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37" (1/1) ... [2024-09-18 16:44:37,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:44:37,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:44:37,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-18 16:44:37,382 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-18 16:44:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 16:44:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 16:44:37,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 16:44:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 16:44:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-18 16:44:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-18 16:44:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-18 16:44:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-18 16:44:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-18 16:44:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-18 16:44:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 16:44:37,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 16:44:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2024-09-18 16:44:37,415 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2024-09-18 16:44:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 16:44:37,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 16:44:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-18 16:44:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-18 16:44:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-18 16:44:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2024-09-18 16:44:37,416 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2024-09-18 16:44:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-18 16:44:37,477 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 16:44:37,478 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 16:44:37,588 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-18 16:44:37,588 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 16:44:37,601 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 16:44:37,602 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-18 16:44:37,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:44:37 BoogieIcfgContainer [2024-09-18 16:44:37,602 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 16:44:37,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 16:44:37,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 16:44:37,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 16:44:37,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 04:44:37" (1/3) ... [2024-09-18 16:44:37,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f40d87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:44:37, skipping insertion in model container [2024-09-18 16:44:37,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:44:37" (2/3) ... [2024-09-18 16:44:37,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f40d87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:44:37, skipping insertion in model container [2024-09-18 16:44:37,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:44:37" (3/3) ... [2024-09-18 16:44:37,608 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_2.c [2024-09-18 16:44:37,620 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 16:44:37,620 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 16:44:37,660 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 16:44:37,665 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;@5646b08e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 16:44:37,665 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 16:44:37,668 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) [2024-09-18 16:44:37,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-18 16:44:37,673 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:44:37,674 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:44:37,674 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:44:37,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:37,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1880927793, now seen corresponding path program 1 times [2024-09-18 16:44:37,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:44:37,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238721505] [2024-09-18 16:44:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:44:37,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:44:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:38,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:44:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:38,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:44:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 16:44:38,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:44:38,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238721505] [2024-09-18 16:44:38,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238721505] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:44:38,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:44:38,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-18 16:44:38,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496521225] [2024-09-18 16:44:38,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:44:38,154 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-18 16:44:38,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:44:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-18 16:44:38,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-18 16:44:38,183 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) [2024-09-18 16:44:38,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:44:38,306 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-09-18 16:44:38,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 16:44:38,308 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 [2024-09-18 16:44:38,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:44:38,313 INFO L225 Difference]: With dead ends: 40 [2024-09-18 16:44:38,313 INFO L226 Difference]: Without dead ends: 27 [2024-09-18 16:44:38,315 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-18 16:44:38,317 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 [2024-09-18 16:44:38,318 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] [2024-09-18 16:44:38,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-18 16:44:38,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-09-18 16:44:38,342 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) [2024-09-18 16:44:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-09-18 16:44:38,343 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2024-09-18 16:44:38,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:44:38,344 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-09-18 16:44:38,344 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) [2024-09-18 16:44:38,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-09-18 16:44:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-18 16:44:38,346 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:44:38,346 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] [2024-09-18 16:44:38,346 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 16:44:38,346 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:44:38,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:38,347 INFO L85 PathProgramCache]: Analyzing trace with hash 259605890, now seen corresponding path program 1 times [2024-09-18 16:44:38,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:44:38,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948559969] [2024-09-18 16:44:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:44:38,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:44:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:38,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:44:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:38,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:44:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:38,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:38,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-18 16:44:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-18 16:44:38,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:44:38,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948559969] [2024-09-18 16:44:38,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948559969] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:44:38,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:44:38,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-18 16:44:38,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611020134] [2024-09-18 16:44:38,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:44:38,513 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-18 16:44:38,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:44:38,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-18 16:44:38,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-18 16:44:38,516 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) [2024-09-18 16:44:38,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:44:38,618 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2024-09-18 16:44:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-18 16:44:38,620 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 [2024-09-18 16:44:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:44:38,621 INFO L225 Difference]: With dead ends: 46 [2024-09-18 16:44:38,621 INFO L226 Difference]: Without dead ends: 27 [2024-09-18 16:44:38,622 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-18 16:44:38,623 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 [2024-09-18 16:44:38,624 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] [2024-09-18 16:44:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-18 16:44:38,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-18 16:44:38,630 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) [2024-09-18 16:44:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-18 16:44:38,632 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 25 [2024-09-18 16:44:38,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:44:38,633 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-18 16:44:38,633 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) [2024-09-18 16:44:38,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-18 16:44:38,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-18 16:44:38,636 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:44:38,636 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] [2024-09-18 16:44:38,637 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-18 16:44:38,637 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:44:38,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:38,637 INFO L85 PathProgramCache]: Analyzing trace with hash 889705653, now seen corresponding path program 1 times [2024-09-18 16:44:38,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:44:38,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902575118] [2024-09-18 16:44:38,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:44:38,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:44:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:38,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:44:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:38,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:44:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:38,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:38,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:39,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-18 16:44:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-18 16:44:39,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:44:39,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902575118] [2024-09-18 16:44:39,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902575118] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:44:39,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770459039] [2024-09-18 16:44:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:44:39,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:44:39,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:44:39,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:44:39,036 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 16:44:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:39,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-18 16:44:39,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:44:39,154 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 [2024-09-18 16:44:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-18 16:44:39,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:44:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 16:44:39,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770459039] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:44:39,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:44:39,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 25 [2024-09-18 16:44:39,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389137281] [2024-09-18 16:44:39,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:44:39,695 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-18 16:44:39,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:44:39,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-18 16:44:39,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-09-18 16:44:39,697 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) [2024-09-18 16:44:40,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:44:40,010 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2024-09-18 16:44:40,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-18 16:44:40,011 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 [2024-09-18 16:44:40,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:44:40,011 INFO L225 Difference]: With dead ends: 52 [2024-09-18 16:44:40,011 INFO L226 Difference]: Without dead ends: 31 [2024-09-18 16:44:40,012 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2024-09-18 16:44:40,013 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 [2024-09-18 16:44:40,013 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] [2024-09-18 16:44:40,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-18 16:44:40,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-18 16:44:40,020 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) [2024-09-18 16:44:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-09-18 16:44:40,023 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 30 [2024-09-18 16:44:40,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:44:40,023 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-09-18 16:44:40,023 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) [2024-09-18 16:44:40,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-09-18 16:44:40,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-18 16:44:40,026 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:44:40,026 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] [2024-09-18 16:44:40,039 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-18 16:44:40,227 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 [2024-09-18 16:44:40,227 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:44:40,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:40,228 INFO L85 PathProgramCache]: Analyzing trace with hash 282472211, now seen corresponding path program 2 times [2024-09-18 16:44:40,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:44:40,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286477369] [2024-09-18 16:44:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:44:40,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:44:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:40,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:44:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:40,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:44:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:40,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:40,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:40,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:40,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-18 16:44:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:40,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:40,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:40,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:40,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-18 16:44:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-18 16:44:40,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:44:40,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286477369] [2024-09-18 16:44:40,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286477369] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:44:40,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780678869] [2024-09-18 16:44:40,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:44:40,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:44:40,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:44:40,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:44:40,774 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 16:44:40,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:44:40,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:44:40,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-18 16:44:40,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:44:40,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-18 16:44:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-18 16:44:41,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:44:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 56 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-18 16:44:41,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780678869] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:44:41,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:44:41,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 14] total 29 [2024-09-18 16:44:41,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552743297] [2024-09-18 16:44:41,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:44:41,798 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-18 16:44:41,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:44:41,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-18 16:44:41,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2024-09-18 16:44:41,799 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) [2024-09-18 16:44:42,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:44:42,020 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2024-09-18 16:44:42,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-18 16:44:42,021 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 [2024-09-18 16:44:42,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:44:42,022 INFO L225 Difference]: With dead ends: 60 [2024-09-18 16:44:42,022 INFO L226 Difference]: Without dead ends: 35 [2024-09-18 16:44:42,022 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 [2024-09-18 16:44:42,023 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 [2024-09-18 16:44:42,023 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] [2024-09-18 16:44:42,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-18 16:44:42,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-18 16:44:42,028 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) [2024-09-18 16:44:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-18 16:44:42,029 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2024-09-18 16:44:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:44:42,029 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-18 16:44:42,029 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) [2024-09-18 16:44:42,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:42,029 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-18 16:44:42,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-18 16:44:42,030 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:44:42,031 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] [2024-09-18 16:44:42,042 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-18 16:44:42,231 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 [2024-09-18 16:44:42,231 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:44:42,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:42,232 INFO L85 PathProgramCache]: Analyzing trace with hash -209044141, now seen corresponding path program 3 times [2024-09-18 16:44:42,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:44:42,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818415143] [2024-09-18 16:44:42,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:44:42,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:44:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:42,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:44:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:42,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:44:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:42,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:42,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:43,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:43,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:43,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:43,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-18 16:44:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:43,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:43,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:43,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:43,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:43,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:43,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-18 16:44:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 10 proven. 118 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-09-18 16:44:43,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:44:43,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818415143] [2024-09-18 16:44:43,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818415143] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:44:43,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803252359] [2024-09-18 16:44:43,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 16:44:43,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:44:43,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:44:43,255 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) [2024-09-18 16:44:43,269 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 16:44:43,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-18 16:44:43,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:44:43,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-18 16:44:43,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:44:43,348 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 [2024-09-18 16:44:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-09-18 16:44:43,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:44:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-09-18 16:44:44,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803252359] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:44:44,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:44:44,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 14] total 35 [2024-09-18 16:44:44,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027613629] [2024-09-18 16:44:44,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:44:44,172 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-18 16:44:44,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:44:44,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-18 16:44:44,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1031, Unknown=0, NotChecked=0, Total=1190 [2024-09-18 16:44:44,174 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) [2024-09-18 16:44:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:44:44,605 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2024-09-18 16:44:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-18 16:44:44,606 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 [2024-09-18 16:44:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:44:44,606 INFO L225 Difference]: With dead ends: 68 [2024-09-18 16:44:44,606 INFO L226 Difference]: Without dead ends: 39 [2024-09-18 16:44:44,607 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 [2024-09-18 16:44:44,608 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 [2024-09-18 16:44:44,608 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] [2024-09-18 16:44:44,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-18 16:44:44,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-18 16:44:44,613 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) [2024-09-18 16:44:44,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-09-18 16:44:44,614 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 76 [2024-09-18 16:44:44,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:44:44,614 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-09-18 16:44:44,614 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) [2024-09-18 16:44:44,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:44,614 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-09-18 16:44:44,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-09-18 16:44:44,615 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:44:44,615 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] [2024-09-18 16:44:44,630 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-18 16:44:44,815 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 [2024-09-18 16:44:44,816 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:44:44,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:44,817 INFO L85 PathProgramCache]: Analyzing trace with hash -313301423, now seen corresponding path program 4 times [2024-09-18 16:44:44,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:44:44,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976675006] [2024-09-18 16:44:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:44:44,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:44:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:45,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:44:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:45,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:44:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:45,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-18 16:44:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-18 16:44:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-18 16:44:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 14 proven. 307 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2024-09-18 16:44:46,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:44:46,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976675006] [2024-09-18 16:44:46,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976675006] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:44:46,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358936597] [2024-09-18 16:44:46,443 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 16:44:46,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:44:46,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:44:46,445 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) [2024-09-18 16:44:46,445 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 16:44:46,564 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 16:44:46,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:44:46,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-09-18 16:44:46,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:44:46,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-18 16:44:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 346 proven. 35 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-09-18 16:44:46,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:44:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 6 proven. 414 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-09-18 16:44:48,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358936597] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:44:48,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:44:48,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 26] total 44 [2024-09-18 16:44:48,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218374477] [2024-09-18 16:44:48,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:44:48,962 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-18 16:44:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:44:48,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-18 16:44:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=1517, Unknown=0, NotChecked=0, Total=1892 [2024-09-18 16:44:48,963 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) [2024-09-18 16:44:49,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:44:49,307 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2024-09-18 16:44:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-18 16:44:49,307 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 [2024-09-18 16:44:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:44:49,308 INFO L225 Difference]: With dead ends: 74 [2024-09-18 16:44:49,308 INFO L226 Difference]: Without dead ends: 41 [2024-09-18 16:44:49,310 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 257 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=564, Invalid=2088, Unknown=0, NotChecked=0, Total=2652 [2024-09-18 16:44:49,310 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-18 16:44:49,310 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] [2024-09-18 16:44:49,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-18 16:44:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-18 16:44:49,317 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) [2024-09-18 16:44:49,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2024-09-18 16:44:49,318 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 122 [2024-09-18 16:44:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:44:49,318 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2024-09-18 16:44:49,318 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) [2024-09-18 16:44:49,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2024-09-18 16:44:49,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-18 16:44:49,320 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:44:49,320 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] [2024-09-18 16:44:49,332 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-18 16:44:49,520 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 [2024-09-18 16:44:49,520 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:44:49,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:49,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1126624914, now seen corresponding path program 5 times [2024-09-18 16:44:49,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:44:49,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713904413] [2024-09-18 16:44:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:44:49,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:44:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:49,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:44:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:49,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:44:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:44:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:44:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:44:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2024-09-18 16:44:50,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:44:50,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713904413] [2024-09-18 16:44:50,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713904413] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:44:50,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644586921] [2024-09-18 16:44:50,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 16:44:50,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:44:50,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:44:50,858 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) [2024-09-18 16:44:50,859 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-18 16:44:51,240 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-18 16:44:51,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:44:51,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-18 16:44:51,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:44:51,253 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 [2024-09-18 16:44:51,427 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 [2024-09-18 16:44:51,448 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 [2024-09-18 16:44:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2024-09-18 16:44:51,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:44:51,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644586921] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:44:51,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 16:44:51,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 25 [2024-09-18 16:44:51,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446893787] [2024-09-18 16:44:51,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 16:44:51,840 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-18 16:44:51,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:44:51,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-18 16:44:51,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2024-09-18 16:44:51,841 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) [2024-09-18 16:44:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:44:52,135 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2024-09-18 16:44:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-18 16:44:52,135 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 [2024-09-18 16:44:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:44:52,136 INFO L225 Difference]: With dead ends: 56 [2024-09-18 16:44:52,136 INFO L226 Difference]: Without dead ends: 53 [2024-09-18 16:44:52,137 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2024-09-18 16:44:52,137 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-18 16:44:52,137 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] [2024-09-18 16:44:52,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-18 16:44:52,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2024-09-18 16:44:52,150 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) [2024-09-18 16:44:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-09-18 16:44:52,151 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 137 [2024-09-18 16:44:52,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:44:52,151 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-09-18 16:44:52,152 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) [2024-09-18 16:44:52,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:52,152 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-09-18 16:44:52,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-18 16:44:52,155 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:44:52,155 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] [2024-09-18 16:44:52,176 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-18 16:44:52,355 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 [2024-09-18 16:44:52,356 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:44:52,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:52,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1126622992, now seen corresponding path program 1 times [2024-09-18 16:44:52,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:44:52,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504785302] [2024-09-18 16:44:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:44:52,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:44:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:52,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:44:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:52,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:44:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:44:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:44:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:44:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2024-09-18 16:44:53,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:44:53,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504785302] [2024-09-18 16:44:53,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504785302] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:44:53,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609882869] [2024-09-18 16:44:53,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:44:53,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:44:53,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:44:53,550 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) [2024-09-18 16:44:53,551 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-18 16:44:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:53,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-18 16:44:53,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:44:53,709 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 [2024-09-18 16:44:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2024-09-18 16:44:53,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:44:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2024-09-18 16:44:54,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609882869] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:44:54,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:44:54,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 18] total 37 [2024-09-18 16:44:54,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598736955] [2024-09-18 16:44:54,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:44:54,816 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-18 16:44:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:44:54,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-18 16:44:54,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1087, Unknown=0, NotChecked=0, Total=1332 [2024-09-18 16:44:54,817 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) [2024-09-18 16:44:55,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:44:55,038 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2024-09-18 16:44:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-18 16:44:55,039 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 [2024-09-18 16:44:55,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:44:55,040 INFO L225 Difference]: With dead ends: 50 [2024-09-18 16:44:55,040 INFO L226 Difference]: Without dead ends: 45 [2024-09-18 16:44:55,040 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 300 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=368, Invalid=1524, Unknown=0, NotChecked=0, Total=1892 [2024-09-18 16:44:55,041 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 [2024-09-18 16:44:55,041 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] [2024-09-18 16:44:55,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-18 16:44:55,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-18 16:44:55,052 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) [2024-09-18 16:44:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-09-18 16:44:55,052 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 137 [2024-09-18 16:44:55,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:44:55,053 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-09-18 16:44:55,053 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) [2024-09-18 16:44:55,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:55,053 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-09-18 16:44:55,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-09-18 16:44:55,055 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:44:55,055 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] [2024-09-18 16:44:55,068 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-18 16:44:55,255 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 [2024-09-18 16:44:55,255 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:44:55,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:44:55,256 INFO L85 PathProgramCache]: Analyzing trace with hash 842189810, now seen corresponding path program 6 times [2024-09-18 16:44:55,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:44:55,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110358940] [2024-09-18 16:44:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:44:55,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:44:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:56,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:44:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:56,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:44:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:56,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:56,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:56,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:56,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:56,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:56,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:56,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:56,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:44:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:44:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:44:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:57,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:44:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:58,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:58,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:58,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:58,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:58,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:58,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:58,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:44:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:58,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:44:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:44:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 2842 trivial. 0 not checked. [2024-09-18 16:44:58,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:44:58,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110358940] [2024-09-18 16:44:58,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110358940] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:44:58,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146168412] [2024-09-18 16:44:58,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 16:44:58,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:44:58,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:44:58,171 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) [2024-09-18 16:44:58,172 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-18 16:44:59,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-09-18 16:44:59,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:44:59,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 162 conjuncts are in the unsatisfiable core [2024-09-18 16:44:59,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:44:59,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-18 16:44:59,738 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 [2024-09-18 16:44:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 1122 proven. 101 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2024-09-18 16:44:59,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:45:00,519 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 [2024-09-18 16:45:00,839 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 [2024-09-18 16:45:01,178 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 [2024-09-18 16:45:01,429 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 [2024-09-18 16:45:02,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146168412] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:45:02,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 16:45:02,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18] total 37 [2024-09-18 16:45:02,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667655431] [2024-09-18 16:45:02,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 16:45:02,031 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-18 16:45:02,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:45:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-18 16:45:02,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1548, Unknown=0, NotChecked=0, Total=1722 [2024-09-18 16:45:02,032 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) [2024-09-18 16:45:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:45:02,972 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2024-09-18 16:45:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-18 16:45:02,972 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 [2024-09-18 16:45:02,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:45:02,974 INFO L225 Difference]: With dead ends: 83 [2024-09-18 16:45:02,974 INFO L226 Difference]: Without dead ends: 79 [2024-09-18 16:45:02,975 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=627, Invalid=4775, Unknown=0, NotChecked=0, Total=5402 [2024-09-18 16:45:02,976 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 [2024-09-18 16:45:02,976 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] [2024-09-18 16:45:02,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-18 16:45:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2024-09-18 16:45:02,986 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) [2024-09-18 16:45:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2024-09-18 16:45:02,986 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 219 [2024-09-18 16:45:02,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:45:02,987 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2024-09-18 16:45:02,987 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) [2024-09-18 16:45:02,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:45:02,987 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2024-09-18 16:45:02,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-09-18 16:45:02,992 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:45:02,992 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] [2024-09-18 16:45:03,009 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-18 16:45:03,192 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 [2024-09-18 16:45:03,193 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:45:03,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:45:03,194 INFO L85 PathProgramCache]: Analyzing trace with hash 121509823, now seen corresponding path program 2 times [2024-09-18 16:45:03,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:45:03,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565291320] [2024-09-18 16:45:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:45:03,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:45:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:04,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:45:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:04,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:45:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:04,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-18 16:45:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-18 16:45:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-18 16:45:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:45:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:45:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3430 backedges. 65 proven. 849 refuted. 0 times theorem prover too weak. 2516 trivial. 0 not checked. [2024-09-18 16:45:05,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:45:05,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565291320] [2024-09-18 16:45:05,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565291320] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:45:05,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428311041] [2024-09-18 16:45:05,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:45:05,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:45:05,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:45:05,806 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) [2024-09-18 16:45:05,807 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-18 16:45:06,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:45:06,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:45:06,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-18 16:45:06,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:45:06,059 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 [2024-09-18 16:45:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3430 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 3395 trivial. 0 not checked. [2024-09-18 16:45:06,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:45:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3430 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 3340 trivial. 0 not checked. [2024-09-18 16:45:08,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428311041] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:45:08,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:45:08,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 26] total 51 [2024-09-18 16:45:08,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033037690] [2024-09-18 16:45:08,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:45:08,557 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-18 16:45:08,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:45:08,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-18 16:45:08,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2202, Unknown=0, NotChecked=0, Total=2550 [2024-09-18 16:45:08,559 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) [2024-09-18 16:45:09,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:45:09,157 INFO L93 Difference]: Finished difference Result 123 states and 161 transitions. [2024-09-18 16:45:09,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-18 16:45:09,159 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 [2024-09-18 16:45:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:45:09,160 INFO L225 Difference]: With dead ends: 123 [2024-09-18 16:45:09,160 INFO L226 Difference]: Without dead ends: 50 [2024-09-18 16:45:09,163 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 525 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=668, Invalid=3754, Unknown=0, NotChecked=0, Total=4422 [2024-09-18 16:45:09,163 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, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 16:45:09,163 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 132 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 16:45:09,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-18 16:45:09,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-18 16:45:09,170 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) [2024-09-18 16:45:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2024-09-18 16:45:09,171 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 234 [2024-09-18 16:45:09,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:45:09,171 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2024-09-18 16:45:09,171 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) [2024-09-18 16:45:09,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:45:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2024-09-18 16:45:09,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-18 16:45:09,173 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:45:09,173 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] [2024-09-18 16:45:09,188 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-18 16:45:09,373 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 [2024-09-18 16:45:09,373 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:45:09,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:45:09,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1830038685, now seen corresponding path program 3 times [2024-09-18 16:45:09,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:45:09,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461729451] [2024-09-18 16:45:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:45:09,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:45:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:09,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:45:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:09,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:45:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:45:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:45:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:10,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:45:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:45:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:45:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:45:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-18 16:45:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:45:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2024-09-18 16:45:11,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:45:11,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461729451] [2024-09-18 16:45:11,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461729451] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:45:11,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616630484] [2024-09-18 16:45:11,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 16:45:11,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:45:11,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:45:11,433 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) [2024-09-18 16:45:11,434 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-18 16:45:13,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 37 check-sat command(s) [2024-09-18 16:45:13,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:45:13,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-18 16:45:13,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:45:13,971 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 [2024-09-18 16:45:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1186 proven. 18 refuted. 0 times theorem prover too weak. 2999 trivial. 0 not checked. [2024-09-18 16:45:14,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:45:14,828 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-18 16:45:14,828 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 [2024-09-18 16:45:15,121 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-18 16:45:15,121 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 [2024-09-18 16:45:15,383 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-18 16:45:15,384 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 [2024-09-18 16:45:15,552 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-18 16:45:15,552 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 [2024-09-18 16:45:15,667 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-18 16:45:15,667 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 [2024-09-18 16:45:15,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616630484] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:45:15,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 16:45:15,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2024-09-18 16:45:15,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912471186] [2024-09-18 16:45:15,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 16:45:15,923 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-18 16:45:15,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:45:15,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-18 16:45:15,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-09-18 16:45:15,924 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) [2024-09-18 16:45:20,085 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] [2024-09-18 16:45:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:45:20,152 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-09-18 16:45:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-18 16:45:20,153 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 [2024-09-18 16:45:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:45:20,153 INFO L225 Difference]: With dead ends: 54 [2024-09-18 16:45:20,153 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 16:45:20,154 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 379 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2024-09-18 16:45:20,154 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 [2024-09-18 16:45:20,154 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] [2024-09-18 16:45:20,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 16:45:20,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 16:45:20,158 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) [2024-09-18 16:45:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 16:45:20,159 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 260 [2024-09-18 16:45:20,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:45:20,159 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 16:45:20,159 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) [2024-09-18 16:45:20,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:45:20,159 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 16:45:20,159 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 16:45:20,161 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 16:45:20,179 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-18 16:45:20,362 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 [2024-09-18 16:45:20,365 INFO L408 BasicCegarLoop]: Path program histogram: [6, 3, 1, 1] [2024-09-18 16:45:20,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 16:45:27,456 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 16:45:27,465 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-18 16:45:27,465 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-18 16:45:27,466 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-18 16:45:27,466 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-18 16:45:27,466 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-18 16:45:27,466 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-18 16:45:27,466 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] [2024-09-18 16:45:27,466 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-09-18 16:45:27,466 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] [2024-09-18 16:45:27,466 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~a!base,]]] [2024-09-18 16:45:27,470 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-18 16:45:27,471 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: ArrayStoreExpression [2024-09-18 16:45:27,471 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-18 16:45:27,471 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-18 16:45:27,471 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-18 16:45:27,471 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-18 16:45:27,471 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-18 16:45:27,471 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-18 16:45:27,471 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-18 16:45:27,472 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-18 16:45:27,472 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-18 16:45:27,472 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-18 16:45:27,472 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-18 16:45:27,472 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-18 16:45:27,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 04:45:27 BoogieIcfgContainer [2024-09-18 16:45:27,472 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 16:45:27,473 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 16:45:27,473 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 16:45:27,473 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 16:45:27,473 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:44:37" (3/4) ... [2024-09-18 16:45:27,475 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 16:45:27,513 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 16:45:27,514 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 16:45:27,514 INFO L158 Benchmark]: Toolchain (without parser) took 50384.94ms. Allocated memory was 190.8MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 159.7MB in the beginning and 550.1MB in the end (delta: -390.3MB). Peak memory consumption was 624.4MB. Max. memory is 16.1GB. [2024-09-18 16:45:27,514 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 16:45:27,514 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.98ms. Allocated memory is still 190.8MB. Free memory was 159.7MB in the beginning and 149.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-18 16:45:27,514 INFO L158 Benchmark]: Boogie Procedure Inliner took 14.64ms. Allocated memory is still 190.8MB. Free memory was 148.5MB in the beginning and 147.9MB in the end (delta: 529.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 16:45:27,514 INFO L158 Benchmark]: Boogie Preprocessor took 28.65ms. Allocated memory is still 190.8MB. Free memory was 147.9MB in the beginning and 145.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:45:27,515 INFO L158 Benchmark]: RCFGBuilder took 249.79ms. Allocated memory is still 190.8MB. Free memory was 145.8MB in the beginning and 131.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-18 16:45:27,515 INFO L158 Benchmark]: TraceAbstraction took 49868.59ms. Allocated memory was 190.8MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 131.7MB in the beginning and 552.2MB in the end (delta: -420.5MB). Peak memory consumption was 595.1MB. Max. memory is 16.1GB. [2024-09-18 16:45:27,515 INFO L158 Benchmark]: Witness Printer took 40.90ms. Allocated memory is still 1.2GB. Free memory was 552.2MB in the beginning and 550.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:45:27,519 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.98ms. Allocated memory is still 190.8MB. Free memory was 159.7MB in the beginning and 149.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 14.64ms. Allocated memory is still 190.8MB. Free memory was 148.5MB in the beginning and 147.9MB in the end (delta: 529.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.65ms. Allocated memory is still 190.8MB. Free memory was 147.9MB in the beginning and 145.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 249.79ms. Allocated memory is still 190.8MB. Free memory was 145.8MB in the beginning and 131.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 49868.59ms. Allocated memory was 190.8MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 131.7MB in the beginning and 552.2MB in the end (delta: -420.5MB). Peak memory consumption was 595.1MB. Max. memory is 16.1GB. * Witness Printer took 40.90ms. Allocated memory is still 1.2GB. Free memory was 552.2MB in the beginning and 550.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: 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: 42.7s, OverallIterations: 11, TraceHistogramMax: 42, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 462 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 458 mSDsluCounter, 1070 SdHoareTripleChecker+Invalid, 5.5s 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, 5.4s 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, 4.0s SatisfiabilityAnalysisTime, 27.7s 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! [2024-09-18 16:45:27,548 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE