./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 19:50:40,473 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 19:50:40,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 19:50:40,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 19:50:40,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 19:50:40,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 19:50:40,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 19:50:40,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 19:50:40,551 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 19:50:40,551 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 19:50:40,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 19:50:40,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 19:50:40,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 19:50:40,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 19:50:40,553 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 19:50:40,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 19:50:40,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 19:50:40,553 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 19:50:40,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 19:50:40,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 19:50:40,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 19:50:40,555 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 19:50:40,555 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 19:50:40,555 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 19:50:40,559 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 19:50:40,559 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 19:50:40,559 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 19:50:40,560 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 19:50:40,560 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 19:50:40,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 19:50:40,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 19:50:40,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 19:50:40,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:50:40,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 19:50:40,561 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 19:50:40,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 19:50:40,561 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 19:50:40,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 19:50:40,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 19:50:40,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 19:50:40,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 19:50:40,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 19:50:40,576 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-15 19:50:40,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 19:50:40,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 19:50:40,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 19:50:40,841 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 19:50:40,844 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 19:50:40,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-15 19:50:42,356 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 19:50:42,524 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 19:50:42,525 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-15 19:50:42,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d1f2d5eeb/c1d3e4cd0e834147ab44065a8444e44c/FLAGcc99b180c [2024-09-15 19:50:42,546 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d1f2d5eeb/c1d3e4cd0e834147ab44065a8444e44c [2024-09-15 19:50:42,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 19:50:42,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-15 19:50:42,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 19:50:42,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 19:50:42,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 19:50:42,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c965da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42, skipping insertion in model container [2024-09-15 19:50:42,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,573 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 19:50:42,694 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] [2024-09-15 19:50:42,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:50:42,708 INFO L200 MainTranslator]: Completed pre-run [2024-09-15 19:50:42,722 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] [2024-09-15 19:50:42,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:50:42,736 INFO L204 MainTranslator]: Completed translation [2024-09-15 19:50:42,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42 WrapperNode [2024-09-15 19:50:42,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 19:50:42,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 19:50:42,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 19:50:42,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 19:50:42,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,749 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,755 INFO L138 Inliner]: procedures = 13, calls = 29, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-15 19:50:42,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 19:50:42,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 19:50:42,757 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 19:50:42,757 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 19:50:42,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,792 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]. [2024-09-15 19:50:42,793 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,799 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 19:50:42,806 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 19:50:42,806 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 19:50:42,806 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 19:50:42,807 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42" (1/1) ... [2024-09-15 19:50:42,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:50:42,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:50:42,843 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) [2024-09-15 19:50:42,851 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 [2024-09-15 19:50:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 19:50:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 19:50:42,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 19:50:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 19:50:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-15 19:50:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-15 19:50:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-15 19:50:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-15 19:50:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-15 19:50:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-15 19:50:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 19:50:42,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 19:50:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2024-09-15 19:50:42,894 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2024-09-15 19:50:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 19:50:42,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 19:50:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-15 19:50:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-15 19:50:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-15 19:50:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2024-09-15 19:50:42,895 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2024-09-15 19:50:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-15 19:50:42,984 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 19:50:42,987 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 19:50:43,125 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-15 19:50:43,125 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 19:50:43,144 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 19:50:43,145 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-15 19:50:43,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:50:43 BoogieIcfgContainer [2024-09-15 19:50:43,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 19:50:43,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 19:50:43,148 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 19:50:43,150 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 19:50:43,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 07:50:42" (1/3) ... [2024-09-15 19:50:43,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8d002c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:50:43, skipping insertion in model container [2024-09-15 19:50:43,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:42" (2/3) ... [2024-09-15 19:50:43,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8d002c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:50:43, skipping insertion in model container [2024-09-15 19:50:43,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:50:43" (3/3) ... [2024-09-15 19:50:43,154 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_2.c [2024-09-15 19:50:43,167 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 19:50:43,167 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-15 19:50:43,213 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 19:50:43,218 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;@4915ac29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 19:50:43,219 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-15 19:50:43,222 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) [2024-09-15 19:50:43,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-15 19:50:43,227 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:50:43,228 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:50:43,228 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:50:43,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:43,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1880927793, now seen corresponding path program 1 times [2024-09-15 19:50:43,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:50:43,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115190365] [2024-09-15 19:50:43,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:43,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:50:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:43,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:50:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:43,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:50:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:50:43,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:50:43,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115190365] [2024-09-15 19:50:43,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115190365] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:50:43,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:50:43,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-15 19:50:43,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145971432] [2024-09-15 19:50:43,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:50:43,651 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 19:50:43,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:50:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 19:50:43,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-15 19:50:43,670 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) [2024-09-15 19:50:43,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:50:43,807 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-09-15 19:50:43,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 19:50:43,809 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 [2024-09-15 19:50:43,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:50:43,815 INFO L225 Difference]: With dead ends: 40 [2024-09-15 19:50:43,815 INFO L226 Difference]: Without dead ends: 27 [2024-09-15 19:50:43,817 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 [2024-09-15 19:50:43,821 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 [2024-09-15 19:50:43,822 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] [2024-09-15 19:50:43,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-15 19:50:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-09-15 19:50:43,879 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) [2024-09-15 19:50:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-09-15 19:50:43,881 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2024-09-15 19:50:43,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:50:43,881 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-09-15 19:50:43,881 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) [2024-09-15 19:50:43,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-09-15 19:50:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-15 19:50:43,916 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:50:43,916 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] [2024-09-15 19:50:43,917 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 19:50:43,917 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:50:43,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:43,917 INFO L85 PathProgramCache]: Analyzing trace with hash 259605890, now seen corresponding path program 1 times [2024-09-15 19:50:43,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:50:43,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938518468] [2024-09-15 19:50:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:43,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:50:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:44,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:50:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:44,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:50:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:44,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:44,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-15 19:50:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-15 19:50:44,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:50:44,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938518468] [2024-09-15 19:50:44,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938518468] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:50:44,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:50:44,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-15 19:50:44,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913399737] [2024-09-15 19:50:44,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:50:44,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 19:50:44,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:50:44,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 19:50:44,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-15 19:50:44,198 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) [2024-09-15 19:50:44,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:50:44,305 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2024-09-15 19:50:44,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 19:50:44,306 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 [2024-09-15 19:50:44,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:50:44,307 INFO L225 Difference]: With dead ends: 46 [2024-09-15 19:50:44,307 INFO L226 Difference]: Without dead ends: 27 [2024-09-15 19:50:44,308 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 [2024-09-15 19:50:44,311 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 [2024-09-15 19:50:44,311 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] [2024-09-15 19:50:44,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-15 19:50:44,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-15 19:50:44,320 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) [2024-09-15 19:50:44,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-15 19:50:44,321 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 25 [2024-09-15 19:50:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:50:44,322 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-15 19:50:44,322 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) [2024-09-15 19:50:44,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:44,323 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-15 19:50:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-15 19:50:44,324 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:50:44,324 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] [2024-09-15 19:50:44,325 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 19:50:44,325 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:50:44,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:44,326 INFO L85 PathProgramCache]: Analyzing trace with hash 889705653, now seen corresponding path program 1 times [2024-09-15 19:50:44,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:50:44,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277989751] [2024-09-15 19:50:44,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:44,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:50:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:44,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:50:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:44,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:50:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:44,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:44,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:44,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 19:50:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-15 19:50:44,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:50:44,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277989751] [2024-09-15 19:50:44,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277989751] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:50:44,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923450276] [2024-09-15 19:50:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:44,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:44,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:50:44,779 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) [2024-09-15 19:50:44,780 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 19:50:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:44,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-15 19:50:44,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:50:44,909 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 [2024-09-15 19:50:45,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-09-15 19:50:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-15 19:50:45,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:50:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-15 19:50:45,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923450276] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:50:45,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:50:45,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-09-15 19:50:45,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013461993] [2024-09-15 19:50:45,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:50:45,545 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-15 19:50:45,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:50:45,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-15 19:50:45,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-09-15 19:50:45,548 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 23 states, 17 states have (on average 2.0) internal successors, (34), 19 states have internal predecessors, (34), 8 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (10), 4 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-15 19:50:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:50:45,747 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2024-09-15 19:50:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-15 19:50:45,747 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 2.0) internal successors, (34), 19 states have internal predecessors, (34), 8 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (10), 4 states have call predecessors, (10), 8 states have call successors, (10) Word has length 30 [2024-09-15 19:50:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:50:45,749 INFO L225 Difference]: With dead ends: 50 [2024-09-15 19:50:45,750 INFO L226 Difference]: Without dead ends: 29 [2024-09-15 19:50:45,750 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2024-09-15 19:50:45,751 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:50:45,751 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 109 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:50:45,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-15 19:50:45,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-15 19:50:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-15 19:50:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-09-15 19:50:45,761 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 30 [2024-09-15 19:50:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:50:45,761 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-09-15 19:50:45,762 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 2.0) internal successors, (34), 19 states have internal predecessors, (34), 8 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (10), 4 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-15 19:50:45,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-09-15 19:50:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-15 19:50:45,764 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:50:45,764 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:50:45,781 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 19:50:45,968 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 [2024-09-15 19:50:45,969 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:50:45,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1706437626, now seen corresponding path program 2 times [2024-09-15 19:50:45,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:50:45,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330130442] [2024-09-15 19:50:45,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:45,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:50:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:46,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:50:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:46,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:50:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:46,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:46,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:46,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:46,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-15 19:50:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-15 19:50:46,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:50:46,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330130442] [2024-09-15 19:50:46,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330130442] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:50:46,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234689009] [2024-09-15 19:50:46,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:50:46,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:46,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:50:46,535 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) [2024-09-15 19:50:46,536 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 19:50:46,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:50:46,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:50:46,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-15 19:50:46,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:50:46,603 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 [2024-09-15 19:50:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-15 19:50:46,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:50:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-15 19:50:47,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234689009] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:50:47,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:50:47,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 26 [2024-09-15 19:50:47,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496689442] [2024-09-15 19:50:47,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:50:47,193 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-15 19:50:47,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:50:47,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-15 19:50:47,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2024-09-15 19:50:47,194 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 26 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 10 states have call successors, (13), 6 states have call predecessors, (13), 9 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) [2024-09-15 19:50:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:50:47,518 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2024-09-15 19:50:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-15 19:50:47,519 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 10 states have call successors, (13), 6 states have call predecessors, (13), 9 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) Word has length 35 [2024-09-15 19:50:47,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:50:47,519 INFO L225 Difference]: With dead ends: 56 [2024-09-15 19:50:47,519 INFO L226 Difference]: Without dead ends: 33 [2024-09-15 19:50:47,520 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2024-09-15 19:50:47,521 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:50:47,521 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 87 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:50:47,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-15 19:50:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-15 19:50:47,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2024-09-15 19:50:47,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-15 19:50:47,537 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2024-09-15 19:50:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:50:47,537 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-15 19:50:47,537 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 10 states have call successors, (13), 6 states have call predecessors, (13), 9 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) [2024-09-15 19:50:47,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:47,538 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-15 19:50:47,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-15 19:50:47,542 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:50:47,543 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:50:47,573 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 19:50:47,743 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 [2024-09-15 19:50:47,744 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:50:47,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:47,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1700016267, now seen corresponding path program 3 times [2024-09-15 19:50:47,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:50:47,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248645036] [2024-09-15 19:50:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:47,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:50:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:48,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:50:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:48,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:50:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:48,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:48,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:48,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:48,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:48,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:50:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:48,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:48,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:48,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:48,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:48,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:50:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 8 proven. 75 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-15 19:50:48,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:50:48,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248645036] [2024-09-15 19:50:48,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248645036] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:50:48,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613560147] [2024-09-15 19:50:48,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 19:50:48,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:48,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:50:48,630 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) [2024-09-15 19:50:48,635 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 19:50:48,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-15 19:50:48,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:50:48,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-15 19:50:48,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:50:48,742 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 [2024-09-15 19:50:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-09-15 19:50:48,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:50:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-09-15 19:50:49,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613560147] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:50:49,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:50:49,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 34 [2024-09-15 19:50:49,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951067600] [2024-09-15 19:50:49,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:50:49,779 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-15 19:50:49,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:50:49,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-15 19:50:49,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2024-09-15 19:50:49,780 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 34 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 28 states have internal predecessors, (50), 13 states have call successors, (19), 7 states have call predecessors, (19), 12 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2024-09-15 19:50:50,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:50:50,185 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2024-09-15 19:50:50,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-15 19:50:50,189 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 28 states have internal predecessors, (50), 13 states have call successors, (19), 7 states have call predecessors, (19), 12 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) Word has length 66 [2024-09-15 19:50:50,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:50:50,193 INFO L225 Difference]: With dead ends: 64 [2024-09-15 19:50:50,193 INFO L226 Difference]: Without dead ends: 37 [2024-09-15 19:50:50,194 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=286, Invalid=1694, Unknown=0, NotChecked=0, Total=1980 [2024-09-15 19:50:50,195 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 43 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:50:50,195 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 148 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:50:50,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-15 19:50:50,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-15 19:50:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 10 states have return successors, (12), 10 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-15 19:50:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-09-15 19:50:50,204 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 66 [2024-09-15 19:50:50,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:50:50,205 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-09-15 19:50:50,205 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 28 states have internal predecessors, (50), 13 states have call successors, (19), 7 states have call predecessors, (19), 12 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2024-09-15 19:50:50,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:50,205 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-09-15 19:50:50,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-09-15 19:50:50,207 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:50:50,207 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:50:50,223 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-15 19:50:50,410 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 [2024-09-15 19:50:50,411 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:50:50,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:50,412 INFO L85 PathProgramCache]: Analyzing trace with hash -515831498, now seen corresponding path program 4 times [2024-09-15 19:50:50,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:50:50,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578421361] [2024-09-15 19:50:50,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:50,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:50:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:50,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:50:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:50,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:50:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 19:50:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 19:50:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 19:50:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 12 proven. 212 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-09-15 19:50:51,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:50:51,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578421361] [2024-09-15 19:50:51,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578421361] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:50:51,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476507786] [2024-09-15 19:50:51,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 19:50:51,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:51,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:50:51,800 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) [2024-09-15 19:50:51,804 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 19:50:51,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 19:50:51,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:50:51,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-15 19:50:51,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:50:51,945 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 [2024-09-15 19:50:52,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-09-15 19:50:52,138 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 [2024-09-15 19:50:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2024-09-15 19:50:52,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:50:52,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-09-15 19:50:52,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476507786] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:50:52,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:50:52,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2024-09-15 19:50:52,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446880224] [2024-09-15 19:50:52,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:50:52,760 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-15 19:50:52,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:50:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-15 19:50:52,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2024-09-15 19:50:52,761 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 24 states, 19 states have (on average 2.263157894736842) internal successors, (43), 21 states have internal predecessors, (43), 9 states have call successors, (15), 4 states have call predecessors, (15), 11 states have return successors, (16), 11 states have call predecessors, (16), 9 states have call successors, (16) [2024-09-15 19:50:53,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:50:53,205 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2024-09-15 19:50:53,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-15 19:50:53,206 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 2.263157894736842) internal successors, (43), 21 states have internal predecessors, (43), 9 states have call successors, (15), 4 states have call predecessors, (15), 11 states have return successors, (16), 11 states have call predecessors, (16), 9 states have call successors, (16) Word has length 107 [2024-09-15 19:50:53,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:50:53,207 INFO L225 Difference]: With dead ends: 75 [2024-09-15 19:50:53,207 INFO L226 Difference]: Without dead ends: 44 [2024-09-15 19:50:53,207 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=222, Invalid=1338, Unknown=0, NotChecked=0, Total=1560 [2024-09-15 19:50:53,208 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 31 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:50:53,208 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 99 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:50:53,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-15 19:50:53,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-09-15 19:50:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 12 states have return successors, (15), 13 states have call predecessors, (15), 5 states have call successors, (15) [2024-09-15 19:50:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2024-09-15 19:50:53,218 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 107 [2024-09-15 19:50:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:50:53,218 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2024-09-15 19:50:53,218 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 2.263157894736842) internal successors, (43), 21 states have internal predecessors, (43), 9 states have call successors, (15), 4 states have call predecessors, (15), 11 states have return successors, (16), 11 states have call predecessors, (16), 9 states have call successors, (16) [2024-09-15 19:50:53,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2024-09-15 19:50:53,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-09-15 19:50:53,219 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:50:53,219 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] [2024-09-15 19:50:53,232 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-15 19:50:53,419 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 [2024-09-15 19:50:53,420 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:50:53,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash -313299501, now seen corresponding path program 1 times [2024-09-15 19:50:53,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:50:53,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61086133] [2024-09-15 19:50:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:53,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:50:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:54,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:50:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:54,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:50:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:54,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:54,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:54,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:54,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 19:50:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 19:50:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 19:50:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 14 proven. 307 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2024-09-15 19:50:55,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:50:55,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61086133] [2024-09-15 19:50:55,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61086133] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:50:55,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755354596] [2024-09-15 19:50:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:55,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:55,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:50:55,211 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) [2024-09-15 19:50:55,216 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 19:50:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-15 19:50:55,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:50:55,345 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 [2024-09-15 19:50:55,588 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2024-09-15 19:50:55,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:50:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2024-09-15 19:50:56,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755354596] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:50:56,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:50:56,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 18] total 41 [2024-09-15 19:50:56,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031649191] [2024-09-15 19:50:56,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:50:56,745 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-15 19:50:56,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:50:56,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-15 19:50:56,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2024-09-15 19:50:56,747 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 41 states, 32 states have (on average 1.78125) internal successors, (57), 34 states have internal predecessors, (57), 15 states have call successors, (21), 8 states have call predecessors, (21), 16 states have return successors, (24), 17 states have call predecessors, (24), 15 states have call successors, (24) [2024-09-15 19:50:57,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:50:57,261 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2024-09-15 19:50:57,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-15 19:50:57,262 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 32 states have (on average 1.78125) internal successors, (57), 34 states have internal predecessors, (57), 15 states have call successors, (21), 8 states have call predecessors, (21), 16 states have return successors, (24), 17 states have call predecessors, (24), 15 states have call successors, (24) Word has length 122 [2024-09-15 19:50:57,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:50:57,262 INFO L225 Difference]: With dead ends: 80 [2024-09-15 19:50:57,262 INFO L226 Difference]: Without dead ends: 43 [2024-09-15 19:50:57,264 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=2456, Unknown=0, NotChecked=0, Total=2862 [2024-09-15 19:50:57,264 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 47 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:50:57,264 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 178 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:50:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-15 19:50:57,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-15 19:50:57,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 13 states have return successors, (15), 13 states have call predecessors, (15), 5 states have call successors, (15) [2024-09-15 19:50:57,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-09-15 19:50:57,270 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 122 [2024-09-15 19:50:57,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:50:57,271 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-09-15 19:50:57,271 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 32 states have (on average 1.78125) internal successors, (57), 34 states have internal predecessors, (57), 15 states have call successors, (21), 8 states have call predecessors, (21), 16 states have return successors, (24), 17 states have call predecessors, (24), 15 states have call successors, (24) [2024-09-15 19:50:57,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-09-15 19:50:57,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-09-15 19:50:57,272 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:50:57,273 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:50:57,288 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-15 19:50:57,476 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 [2024-09-15 19:50:57,477 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:50:57,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:57,477 INFO L85 PathProgramCache]: Analyzing trace with hash -525253801, now seen corresponding path program 5 times [2024-09-15 19:50:57,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:50:57,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249135431] [2024-09-15 19:50:57,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:57,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:50:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:58,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:50:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:58,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:50:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:58,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:58,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:58,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:58,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:58,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:58,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:58,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:58,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:50:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:50:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:50:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:50:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 11 proven. 27 refuted. 0 times theorem prover too weak. 1808 trivial. 0 not checked. [2024-09-15 19:50:59,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:50:59,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249135431] [2024-09-15 19:50:59,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249135431] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:50:59,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408886925] [2024-09-15 19:50:59,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 19:50:59,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:59,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:50:59,658 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) [2024-09-15 19:50:59,659 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 19:51:00,443 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-09-15 19:51:00,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:51:00,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-15 19:51:00,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:51:00,467 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 [2024-09-15 19:51:00,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-09-15 19:51:00,677 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 [2024-09-15 19:51:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1819 trivial. 0 not checked. [2024-09-15 19:51:00,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:51:01,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-09-15 19:51:01,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408886925] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:51:01,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:51:01,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 26 [2024-09-15 19:51:01,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348831884] [2024-09-15 19:51:01,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:51:01,388 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-15 19:51:01,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:51:01,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-15 19:51:01,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2024-09-15 19:51:01,389 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 26 states, 20 states have (on average 1.8) internal successors, (36), 22 states have internal predecessors, (36), 10 states have call successors, (14), 4 states have call predecessors, (14), 10 states have return successors, (14), 13 states have call predecessors, (14), 10 states have call successors, (14) [2024-09-15 19:51:01,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:51:01,734 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2024-09-15 19:51:01,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-15 19:51:01,735 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.8) internal successors, (36), 22 states have internal predecessors, (36), 10 states have call successors, (14), 4 states have call predecessors, (14), 10 states have return successors, (14), 13 states have call predecessors, (14), 10 states have call successors, (14) Word has length 178 [2024-09-15 19:51:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:51:01,736 INFO L225 Difference]: With dead ends: 58 [2024-09-15 19:51:01,736 INFO L226 Difference]: Without dead ends: 55 [2024-09-15 19:51:01,737 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=262, Invalid=1070, Unknown=0, NotChecked=0, Total=1332 [2024-09-15 19:51:01,737 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 19:51:01,737 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 80 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 19:51:01,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-15 19:51:01,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2024-09-15 19:51:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 15 states have return successors, (19), 16 states have call predecessors, (19), 5 states have call successors, (19) [2024-09-15 19:51:01,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2024-09-15 19:51:01,767 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 178 [2024-09-15 19:51:01,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:51:01,767 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2024-09-15 19:51:01,768 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.8) internal successors, (36), 22 states have internal predecessors, (36), 10 states have call successors, (14), 4 states have call predecessors, (14), 10 states have return successors, (14), 13 states have call predecessors, (14), 10 states have call successors, (14) [2024-09-15 19:51:01,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:51:01,768 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2024-09-15 19:51:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-09-15 19:51:01,770 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:51:01,770 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:51:01,786 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-15 19:51:01,974 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 [2024-09-15 19:51:01,975 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:51:01,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:51:01,975 INFO L85 PathProgramCache]: Analyzing trace with hash -525251879, now seen corresponding path program 2 times [2024-09-15 19:51:01,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:51:01,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873429700] [2024-09-15 19:51:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:51:01,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:51:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:02,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:51:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:02,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:51:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:03,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 1810 trivial. 0 not checked. [2024-09-15 19:51:04,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:51:04,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873429700] [2024-09-15 19:51:04,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873429700] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:51:04,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541439891] [2024-09-15 19:51:04,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:51:04,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:51:04,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:51:04,443 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) [2024-09-15 19:51:04,447 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-15 19:51:04,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:51:04,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:51:04,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-15 19:51:04,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:51:04,701 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 [2024-09-15 19:51:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2024-09-15 19:51:05,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:51:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1788 trivial. 0 not checked. [2024-09-15 19:51:06,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541439891] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:51:06,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:51:06,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 22] total 42 [2024-09-15 19:51:06,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354263945] [2024-09-15 19:51:06,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:51:06,562 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-15 19:51:06,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:51:06,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-15 19:51:06,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1417, Unknown=0, NotChecked=0, Total=1722 [2024-09-15 19:51:06,563 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 42 states, 32 states have (on average 1.59375) internal successors, (51), 34 states have internal predecessors, (51), 17 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) [2024-09-15 19:51:06,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:51:06,901 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2024-09-15 19:51:06,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-15 19:51:06,902 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 32 states have (on average 1.59375) internal successors, (51), 34 states have internal predecessors, (51), 17 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) Word has length 178 [2024-09-15 19:51:06,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:51:06,903 INFO L225 Difference]: With dead ends: 52 [2024-09-15 19:51:06,903 INFO L226 Difference]: Without dead ends: 47 [2024-09-15 19:51:06,904 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 395 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=444, Invalid=2006, Unknown=0, NotChecked=0, Total=2450 [2024-09-15 19:51:06,904 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:51:06,904 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 178 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:51:06,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-15 19:51:06,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-15 19:51:06,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 6 states have call successors, (6), 4 states have call predecessors, (6), 15 states have return successors, (17), 15 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-15 19:51:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2024-09-15 19:51:06,915 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 178 [2024-09-15 19:51:06,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:51:06,917 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2024-09-15 19:51:06,917 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 32 states have (on average 1.59375) internal successors, (51), 34 states have internal predecessors, (51), 17 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) [2024-09-15 19:51:06,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:51:06,918 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-09-15 19:51:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-15 19:51:06,920 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:51:06,920 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] [2024-09-15 19:51:06,939 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-15 19:51:07,120 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 [2024-09-15 19:51:07,121 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:51:07,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:51:07,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1830036763, now seen corresponding path program 6 times [2024-09-15 19:51:07,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:51:07,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915124804] [2024-09-15 19:51:07,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:51:07,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:51:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:07,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:51:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:08,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:51:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:08,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:08,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:08,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:08,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:08,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:08,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:08,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:08,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:09,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 937 proven. 34 refuted. 0 times theorem prover too weak. 3232 trivial. 0 not checked. [2024-09-15 19:51:10,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:51:10,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915124804] [2024-09-15 19:51:10,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915124804] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:51:10,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324388691] [2024-09-15 19:51:10,832 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 19:51:10,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:51:10,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:51:10,833 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) [2024-09-15 19:51:10,834 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-15 19:51:18,257 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-09-15 19:51:18,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:51:18,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-09-15 19:51:18,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:51:18,352 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 [2024-09-15 19:51:18,572 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 [2024-09-15 19:51:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1171 proven. 81 refuted. 0 times theorem prover too weak. 2951 trivial. 0 not checked. [2024-09-15 19:51:18,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:51:19,476 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 [2024-09-15 19:51:19,854 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 [2024-09-15 19:51:20,198 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 [2024-09-15 19:51:20,499 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 [2024-09-15 19:51:20,823 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 [2024-09-15 19:51:21,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324388691] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:51:21,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:51:21,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 25 [2024-09-15 19:51:21,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533600760] [2024-09-15 19:51:21,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:51:21,462 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-15 19:51:21,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:51:21,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-15 19:51:21,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2024-09-15 19:51:21,464 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 24 states have internal predecessors, (45), 9 states have call successors, (17), 3 states have call predecessors, (17), 11 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-15 19:51:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:51:21,956 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-09-15 19:51:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-15 19:51:21,956 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 24 states have internal predecessors, (45), 9 states have call successors, (17), 3 states have call predecessors, (17), 11 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) Word has length 260 [2024-09-15 19:51:21,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:51:21,958 INFO L225 Difference]: With dead ends: 52 [2024-09-15 19:51:21,958 INFO L226 Difference]: Without dead ends: 49 [2024-09-15 19:51:21,959 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=1608, Unknown=0, NotChecked=0, Total=1806 [2024-09-15 19:51:21,959 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:51:21,959 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 226 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:51:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-15 19:51:21,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-09-15 19:51:21,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.08) internal successors, (27), 27 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 15 states have return successors, (17), 15 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-15 19:51:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2024-09-15 19:51:21,976 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 260 [2024-09-15 19:51:21,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:51:21,976 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2024-09-15 19:51:21,976 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 24 states have internal predecessors, (45), 9 states have call successors, (17), 3 states have call predecessors, (17), 11 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-15 19:51:21,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:51:21,977 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2024-09-15 19:51:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-15 19:51:21,980 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:51:21,980 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] [2024-09-15 19:51:22,003 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-15 19:51:22,184 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 [2024-09-15 19:51:22,185 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:51:22,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:51:22,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1830038685, now seen corresponding path program 3 times [2024-09-15 19:51:22,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:51:22,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276389188] [2024-09-15 19:51:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:51:22,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:51:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:22,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:51:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:22,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:51:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:23,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:51:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:51:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:24,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2024-09-15 19:51:24,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:51:24,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276389188] [2024-09-15 19:51:24,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276389188] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:51:24,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779644945] [2024-09-15 19:51:24,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 19:51:24,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:51:24,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:51:24,500 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) [2024-09-15 19:51:24,501 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-15 19:51:27,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 37 check-sat command(s) [2024-09-15 19:51:27,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:51:27,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-15 19:51:27,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:51:27,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-09-15 19:51:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1186 proven. 18 refuted. 0 times theorem prover too weak. 2999 trivial. 0 not checked. [2024-09-15 19:51:27,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:51:28,880 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-15 19:51:28,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-09-15 19:51:29,213 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-15 19:51:29,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-09-15 19:51:29,422 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-15 19:51:29,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-09-15 19:51:29,576 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-15 19:51:29,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-09-15 19:51:29,727 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-15 19:51:29,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-09-15 19:51:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 4159 trivial. 0 not checked. [2024-09-15 19:51:38,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779644945] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:51:38,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:51:38,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 26 [2024-09-15 19:51:38,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190766037] [2024-09-15 19:51:38,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:51:38,417 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-15 19:51:38,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:51:38,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-15 19:51:38,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=565, Unknown=2, NotChecked=0, Total=650 [2024-09-15 19:51:38,418 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 26 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 20 states have internal predecessors, (39), 8 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2024-09-15 19:51:42,645 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] [2024-09-15 19:51:42,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:51:42,737 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2024-09-15 19:51:42,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-15 19:51:42,737 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 20 states have internal predecessors, (39), 8 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 260 [2024-09-15 19:51:42,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:51:42,738 INFO L225 Difference]: With dead ends: 51 [2024-09-15 19:51:42,738 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 19:51:42,739 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 607 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=176, Invalid=1012, Unknown=2, NotChecked=0, Total=1190 [2024-09-15 19:51:42,739 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:51:42,739 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 60 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 327 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2024-09-15 19:51:42,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 19:51:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 19:51:42,740 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) [2024-09-15 19:51:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 19:51:42,740 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 260 [2024-09-15 19:51:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:51:42,740 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 19:51:42,740 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 20 states have internal predecessors, (39), 8 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2024-09-15 19:51:42,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:51:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 19:51:42,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 19:51:42,744 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-15 19:51:42,763 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-15 19:51:42,945 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 [2024-09-15 19:51:42,949 INFO L408 BasicCegarLoop]: Path program histogram: [6, 3, 1, 1] [2024-09-15 19:51:42,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-15 19:51:44,256 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 19:51:44,268 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] [2024-09-15 19:51:44,269 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-15 19:51:44,271 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-15 19:51:44,271 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-09-15 19:51:44,271 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] [2024-09-15 19:51:44,272 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-15 19:51:44,272 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-15 19:51:44,272 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-09-15 19:51:44,272 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] [2024-09-15 19:51:44,273 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-15 19:51:44,276 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-15 19:51:44,276 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] [2024-09-15 19:51:44,276 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-15 19:51:44,276 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] [2024-09-15 19:51:44,276 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-15 19:51:44,276 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-15 19:51:44,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 07:51:44 BoogieIcfgContainer [2024-09-15 19:51:44,276 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 19:51:44,277 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-15 19:51:44,277 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-15 19:51:44,277 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-15 19:51:44,277 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:50:43" (3/4) ... [2024-09-15 19:51:44,278 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-15 19:51:44,282 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-15 19:51:44,282 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_20_to_21_0 [2024-09-15 19:51:44,282 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-15 19:51:44,282 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_21_to_21_0 [2024-09-15 19:51:44,285 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-09-15 19:51:44,285 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-15 19:51:44,285 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-15 19:51:44,285 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-15 19:51:44,352 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-15 19:51:44,352 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-15 19:51:44,352 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-15 19:51:44,353 INFO L158 Benchmark]: Toolchain (without parser) took 61803.36ms. Allocated memory was 75.5MB in the beginning and 941.6MB in the end (delta: 866.1MB). Free memory was 50.7MB in the beginning and 592.0MB in the end (delta: -541.3MB). Peak memory consumption was 325.3MB. Max. memory is 16.1GB. [2024-09-15 19:51:44,353 INFO L158 Benchmark]: CDTParser took 1.42ms. Allocated memory is still 52.4MB. Free memory was 27.3MB in the beginning and 27.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:51:44,353 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.62ms. Allocated memory is still 75.5MB. Free memory was 50.5MB in the beginning and 39.4MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-15 19:51:44,353 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.11ms. Allocated memory is still 75.5MB. Free memory was 39.4MB in the beginning and 38.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:51:44,354 INFO L158 Benchmark]: Boogie Preprocessor took 48.94ms. Allocated memory is still 75.5MB. Free memory was 38.3MB in the beginning and 36.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 19:51:44,354 INFO L158 Benchmark]: RCFGBuilder took 340.37ms. Allocated memory is still 75.5MB. Free memory was 36.3MB in the beginning and 46.0MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-15 19:51:44,354 INFO L158 Benchmark]: TraceAbstraction took 61128.89ms. Allocated memory was 75.5MB in the beginning and 941.6MB in the end (delta: 866.1MB). Free memory was 45.3MB in the beginning and 597.2MB in the end (delta: -552.0MB). Peak memory consumption was 312.7MB. Max. memory is 16.1GB. [2024-09-15 19:51:44,354 INFO L158 Benchmark]: Witness Printer took 75.62ms. Allocated memory is still 941.6MB. Free memory was 597.2MB in the beginning and 592.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-15 19:51:44,355 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.42ms. Allocated memory is still 52.4MB. Free memory was 27.3MB in the beginning and 27.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.62ms. Allocated memory is still 75.5MB. Free memory was 50.5MB in the beginning and 39.4MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.11ms. Allocated memory is still 75.5MB. Free memory was 39.4MB in the beginning and 38.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.94ms. Allocated memory is still 75.5MB. Free memory was 38.3MB in the beginning and 36.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 340.37ms. Allocated memory is still 75.5MB. Free memory was 36.3MB in the beginning and 46.0MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 61128.89ms. Allocated memory was 75.5MB in the beginning and 941.6MB in the end (delta: 866.1MB). Free memory was 45.3MB in the beginning and 597.2MB in the end (delta: -552.0MB). Peak memory consumption was 312.7MB. Max. memory is 16.1GB. * Witness Printer took 75.62ms. Allocated memory is still 941.6MB. Free memory was 597.2MB in the beginning and 592.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.8s, OverallIterations: 11, TraceHistogramMax: 42, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 331 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 325 mSDsluCounter, 1292 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1121 mSDsCounter, 232 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3090 IncrementalHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 232 mSolverCounterUnsat, 171 mSDtfsCounter, 3090 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2671 GetRequests, 2301 SyntacticMatches, 7 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3851 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=8, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 11.3s SatisfiabilityAnalysisTime, 37.3s InterpolantComputationTime, 2511 NumberOfCodeBlocks, 2458 NumberOfCodeBlocksAsserted, 118 NumberOfCheckSat, 3176 ConstructedInterpolants, 38 QuantifiedInterpolants, 10781 SizeOfPredicates, 107 NumberOfNonLiveVariables, 5010 ConjunctsInSsa, 525 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 32994/34038 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 19:51:44,387 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE