./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6604dbb2462dfab53c0d37d83d08add09bc53abffb53773fd7099f9e7acddff3 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-18 15:35:27,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 15:35:27,636 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 15:35:27,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 15:35:27,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 15:35:27,678 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 15:35:27,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 15:35:27,679 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 15:35:27,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 15:35:27,682 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 15:35:27,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 15:35:27,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 15:35:27,684 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 15:35:27,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 15:35:27,685 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 15:35:27,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 15:35:27,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 15:35:27,686 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 15:35:27,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 15:35:27,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 15:35:27,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 15:35:27,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 15:35:27,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 15:35:27,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 15:35:27,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 15:35:27,690 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 15:35:27,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 15:35:27,690 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 15:35:27,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 15:35:27,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 15:35:27,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 15:35:27,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 15:35:27,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:35:27,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 15:35:27,692 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 15:35:27,692 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 15:35:27,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 15:35:27,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 15:35:27,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 15:35:27,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 15:35:27,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 15:35:27,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 15:35:27,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6604dbb2462dfab53c0d37d83d08add09bc53abffb53773fd7099f9e7acddff3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 15:35:27,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 15:35:27,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 15:35:27,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 15:35:27,958 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 15:35:27,958 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 15:35:27,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2024-09-18 15:35:29,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 15:35:29,530 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 15:35:29,531 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2024-09-18 15:35:29,540 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3c778f99d/c4cbb09c3e6e477a86861e970d747977/FLAG23652a536 [2024-09-18 15:35:29,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3c778f99d/c4cbb09c3e6e477a86861e970d747977 [2024-09-18 15:35:29,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 15:35:29,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 15:35:29,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 15:35:29,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 15:35:29,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 15:35:29,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:35:29" (1/1) ... [2024-09-18 15:35:29,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4c5f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:29, skipping insertion in model container [2024-09-18 15:35:29,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:35:29" (1/1) ... [2024-09-18 15:35:29,968 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 15:35:30,099 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/loop-crafted/simple_array_index_value_4.i[919,932] [2024-09-18 15:35:30,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:35:30,126 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 15:35:30,138 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/loop-crafted/simple_array_index_value_4.i[919,932] [2024-09-18 15:35:30,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:35:30,159 INFO L204 MainTranslator]: Completed translation [2024-09-18 15:35:30,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30 WrapperNode [2024-09-18 15:35:30,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 15:35:30,160 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 15:35:30,160 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 15:35:30,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 15:35:30,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30" (1/1) ... [2024-09-18 15:35:30,173 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30" (1/1) ... [2024-09-18 15:35:30,178 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 15:35:30,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 15:35:30,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 15:35:30,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 15:35:30,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 15:35:30,188 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30" (1/1) ... [2024-09-18 15:35:30,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30" (1/1) ... [2024-09-18 15:35:30,190 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30" (1/1) ... [2024-09-18 15:35:30,202 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-09-18 15:35:30,203 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30" (1/1) ... [2024-09-18 15:35:30,203 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30" (1/1) ... [2024-09-18 15:35:30,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30" (1/1) ... [2024-09-18 15:35:30,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30" (1/1) ... [2024-09-18 15:35:30,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30" (1/1) ... [2024-09-18 15:35:30,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30" (1/1) ... [2024-09-18 15:35:30,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 15:35:30,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 15:35:30,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 15:35:30,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 15:35:30,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30" (1/1) ... [2024-09-18 15:35:30,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:35:30,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:35:30,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-18 15:35:30,264 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-18 15:35:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 15:35:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-18 15:35:30,302 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-18 15:35:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 15:35:30,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 15:35:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 15:35:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-18 15:35:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-18 15:35:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-18 15:35:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-18 15:35:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 15:35:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 15:35:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 15:35:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 15:35:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-18 15:35:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-18 15:35:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-18 15:35:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-18 15:35:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-18 15:35:30,374 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 15:35:30,375 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 15:35:30,530 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-18 15:35:30,531 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 15:35:30,559 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 15:35:30,559 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-18 15:35:30,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:35:30 BoogieIcfgContainer [2024-09-18 15:35:30,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 15:35:30,562 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 15:35:30,562 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 15:35:30,565 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 15:35:30,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 03:35:29" (1/3) ... [2024-09-18 15:35:30,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2de98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:35:30, skipping insertion in model container [2024-09-18 15:35:30,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:35:30" (2/3) ... [2024-09-18 15:35:30,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2de98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:35:30, skipping insertion in model container [2024-09-18 15:35:30,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:35:30" (3/3) ... [2024-09-18 15:35:30,568 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2024-09-18 15:35:30,586 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 15:35:30,586 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 15:35:30,649 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 15:35:30,657 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;@55fdff07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 15:35:30,660 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 15:35:30,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 20 states have (on average 1.5) internal successors, (30), 22 states have internal predecessors, (30), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-18 15:35:30,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-18 15:35:30,674 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:35:30,675 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:35:30,676 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:35:30,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:30,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2046391121, now seen corresponding path program 1 times [2024-09-18 15:35:30,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:35:30,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491866788] [2024-09-18 15:35:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:35:30,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:35:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:30,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:35:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:30,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 15:35:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:30,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-18 15:35:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:35:30,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:35:30,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491866788] [2024-09-18 15:35:30,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491866788] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:35:30,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:35:30,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-18 15:35:30,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191687948] [2024-09-18 15:35:30,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:35:30,891 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-18 15:35:30,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:35:30,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-18 15:35:30,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 15:35:30,912 INFO L87 Difference]: Start difference. First operand has 33 states, 20 states have (on average 1.5) internal successors, (30), 22 states have internal predecessors, (30), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:35:30,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:35:30,940 INFO L93 Difference]: Finished difference Result 60 states and 85 transitions. [2024-09-18 15:35:30,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-18 15:35:30,943 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-18 15:35:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:35:30,949 INFO L225 Difference]: With dead ends: 60 [2024-09-18 15:35:30,950 INFO L226 Difference]: Without dead ends: 29 [2024-09-18 15:35:30,952 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 15:35:30,955 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:35:30,956 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:35:30,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-18 15:35:30,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-18 15:35:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-18 15:35:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-09-18 15:35:30,989 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 23 [2024-09-18 15:35:30,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:35:30,989 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-09-18 15:35:30,989 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:35:30,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:30,990 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-09-18 15:35:30,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-18 15:35:30,992 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:35:30,992 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:35:30,992 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 15:35:30,993 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:35:30,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:30,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1913394067, now seen corresponding path program 1 times [2024-09-18 15:35:30,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:35:30,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177236522] [2024-09-18 15:35:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:35:30,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:35:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:31,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:35:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:31,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 15:35:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:31,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-18 15:35:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:35:31,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:35:31,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177236522] [2024-09-18 15:35:31,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177236522] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:35:31,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:35:31,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-18 15:35:31,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363571550] [2024-09-18 15:35:31,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:35:31,222 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-18 15:35:31,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:35:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-18 15:35:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-18 15:35:31,224 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:35:31,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:35:31,241 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-09-18 15:35:31,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-18 15:35:31,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-18 15:35:31,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:35:31,242 INFO L225 Difference]: With dead ends: 53 [2024-09-18 15:35:31,242 INFO L226 Difference]: Without dead ends: 30 [2024-09-18 15:35:31,243 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-18 15:35:31,244 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:35:31,244 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:35:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-18 15:35:31,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-18 15:35:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-18 15:35:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-09-18 15:35:31,251 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 23 [2024-09-18 15:35:31,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:35:31,251 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-09-18 15:35:31,252 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:35:31,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:31,252 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-09-18 15:35:31,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-18 15:35:31,253 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:35:31,253 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:35:31,253 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-18 15:35:31,254 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:35:31,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:31,254 INFO L85 PathProgramCache]: Analyzing trace with hash -770739279, now seen corresponding path program 1 times [2024-09-18 15:35:31,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:35:31,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266927523] [2024-09-18 15:35:31,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:35:31,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:35:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:31,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:35:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:31,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-18 15:35:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:31,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-18 15:35:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:35:31,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:35:31,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266927523] [2024-09-18 15:35:31,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266927523] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:35:31,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452272755] [2024-09-18 15:35:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:35:31,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:35:31,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:35:31,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:35:31,473 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 15:35:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:31,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-18 15:35:31,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:35:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-18 15:35:31,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:35:31,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452272755] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:35:31,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-18 15:35:31,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-09-18 15:35:31,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694510775] [2024-09-18 15:35:31,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:35:31,753 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-18 15:35:31,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:35:31,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-18 15:35:31,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-09-18 15:35:31,758 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-18 15:35:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:35:31,904 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-09-18 15:35:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-18 15:35:31,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-09-18 15:35:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:35:31,906 INFO L225 Difference]: With dead ends: 39 [2024-09-18 15:35:31,908 INFO L226 Difference]: Without dead ends: 37 [2024-09-18 15:35:31,908 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-18 15:35:31,909 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:35:31,911 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 115 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:35:31,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-18 15:35:31,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2024-09-18 15:35:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-18 15:35:31,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-09-18 15:35:31,927 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 24 [2024-09-18 15:35:31,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:35:31,929 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-09-18 15:35:31,929 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-18 15:35:31,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:31,930 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-09-18 15:35:31,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-18 15:35:31,931 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:35:31,931 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:35:31,947 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-18 15:35:32,136 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:35:32,137 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:35:32,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:32,138 INFO L85 PathProgramCache]: Analyzing trace with hash -585580492, now seen corresponding path program 1 times [2024-09-18 15:35:32,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:35:32,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515027871] [2024-09-18 15:35:32,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:35:32,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:35:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:32,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:35:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:32,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-18 15:35:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:32,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-18 15:35:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:35:32,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:35:32,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515027871] [2024-09-18 15:35:32,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515027871] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:35:32,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829575581] [2024-09-18 15:35:32,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:35:32,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:35:32,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:35:32,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:35:32,291 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 15:35:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:32,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-18 15:35:32,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:35:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:35:32,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:35:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:35:32,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829575581] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-18 15:35:32,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:35:32,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-09-18 15:35:32,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278948256] [2024-09-18 15:35:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:35:32,460 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-18 15:35:32,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:35:32,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-18 15:35:32,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-09-18 15:35:32,462 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:35:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:35:32,482 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2024-09-18 15:35:32,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-18 15:35:32,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-09-18 15:35:32,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:35:32,484 INFO L225 Difference]: With dead ends: 49 [2024-09-18 15:35:32,484 INFO L226 Difference]: Without dead ends: 39 [2024-09-18 15:35:32,484 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-09-18 15:35:32,485 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:35:32,485 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 80 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:35:32,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-18 15:35:32,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2024-09-18 15:35:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-18 15:35:32,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-18 15:35:32,499 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2024-09-18 15:35:32,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:35:32,500 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-18 15:35:32,500 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:35:32,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:32,500 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-18 15:35:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-18 15:35:32,502 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:35:32,503 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:35:32,519 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-18 15:35:32,703 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:35:32,703 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:35:32,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1860736701, now seen corresponding path program 1 times [2024-09-18 15:35:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:35:32,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829015501] [2024-09-18 15:35:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:35:32,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:35:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:32,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:35:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:32,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-18 15:35:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:32,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-18 15:35:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:32,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-18 15:35:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:32,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-18 15:35:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-18 15:35:32,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:35:32,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829015501] [2024-09-18 15:35:32,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829015501] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:35:32,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942549978] [2024-09-18 15:35:32,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:35:32,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:35:32,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:35:32,854 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:35:32,857 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 15:35:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:32,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-18 15:35:32,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:35:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-18 15:35:32,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:35:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-18 15:35:32,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942549978] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:35:32,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:35:32,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-18 15:35:32,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462504744] [2024-09-18 15:35:32,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:35:33,000 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-18 15:35:33,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:35:33,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-18 15:35:33,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-09-18 15:35:33,001 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-18 15:35:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:35:33,044 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2024-09-18 15:35:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 15:35:33,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 39 [2024-09-18 15:35:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:35:33,048 INFO L225 Difference]: With dead ends: 66 [2024-09-18 15:35:33,049 INFO L226 Difference]: Without dead ends: 38 [2024-09-18 15:35:33,050 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-09-18 15:35:33,050 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:35:33,051 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:35:33,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-18 15:35:33,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-09-18 15:35:33,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-18 15:35:33,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2024-09-18 15:35:33,061 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 39 [2024-09-18 15:35:33,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:35:33,062 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2024-09-18 15:35:33,062 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-18 15:35:33,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:33,063 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2024-09-18 15:35:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-18 15:35:33,064 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:35:33,064 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:35:33,081 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-18 15:35:33,268 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:35:33,269 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:35:33,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash 406318875, now seen corresponding path program 2 times [2024-09-18 15:35:33,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:35:33,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622786540] [2024-09-18 15:35:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:35:33,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:35:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:33,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:35:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:33,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 15:35:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:33,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-18 15:35:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:33,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 15:35:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:33,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-18 15:35:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-18 15:35:33,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:35:33,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622786540] [2024-09-18 15:35:33,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622786540] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:35:33,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933772332] [2024-09-18 15:35:33,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:35:33,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:35:33,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:35:33,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:35:33,453 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 15:35:33,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:35:33,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:35:33,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-18 15:35:33,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:35:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-18 15:35:33,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:35:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-18 15:35:33,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933772332] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:35:33,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:35:33,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-18 15:35:33,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273388320] [2024-09-18 15:35:33,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:35:33,658 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-18 15:35:33,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:35:33,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-18 15:35:33,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-09-18 15:35:33,659 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-18 15:35:33,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:35:33,819 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2024-09-18 15:35:33,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-18 15:35:33,820 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 42 [2024-09-18 15:35:33,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:35:33,821 INFO L225 Difference]: With dead ends: 72 [2024-09-18 15:35:33,821 INFO L226 Difference]: Without dead ends: 44 [2024-09-18 15:35:33,821 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-09-18 15:35:33,822 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:35:33,822 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:35:33,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-18 15:35:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-09-18 15:35:33,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-18 15:35:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2024-09-18 15:35:33,837 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 42 [2024-09-18 15:35:33,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:35:33,839 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2024-09-18 15:35:33,839 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-18 15:35:33,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2024-09-18 15:35:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-18 15:35:33,840 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:35:33,840 INFO L216 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:35:33,855 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-18 15:35:34,041 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:35:34,041 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:35:34,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1549046821, now seen corresponding path program 3 times [2024-09-18 15:35:34,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:35:34,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864099904] [2024-09-18 15:35:34,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:35:34,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:35:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:34,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:35:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:34,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-18 15:35:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:34,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 15:35:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:34,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-18 15:35:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:34,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-18 15:35:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:35:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-18 15:35:34,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:35:34,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864099904] [2024-09-18 15:35:34,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864099904] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:35:34,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619875987] [2024-09-18 15:35:34,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 15:35:34,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:35:34,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:35:34,382 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:35:34,384 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-18 15:35:34,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-18 15:35:34,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:35:34,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-18 15:35:34,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:35:35,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-18 15:35:35,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-18 15:35:35,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-18 15:35:35,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-18 15:35:35,328 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-18 15:35:35,330 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-18 15:35:35,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-18 15:35:35,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 100 treesize of output 52 [2024-09-18 15:35:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 17 proven. 11 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-18 15:35:35,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:35:38,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619875987] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:35:38,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:35:38,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 28 [2024-09-18 15:35:38,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399579418] [2024-09-18 15:35:38,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:35:38,037 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-18 15:35:38,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:35:38,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-18 15:35:38,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2024-09-18 15:35:38,038 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 28 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 6 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-18 15:35:39,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:35:39,105 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2024-09-18 15:35:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-18 15:35:39,106 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 6 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 48 [2024-09-18 15:35:39,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:35:39,107 INFO L225 Difference]: With dead ends: 80 [2024-09-18 15:35:39,107 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 15:35:39,110 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2024-09-18 15:35:39,111 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:35:39,112 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 364 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:35:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 15:35:39,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 15:35:39,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-18 15:35:39,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 15:35:39,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2024-09-18 15:35:39,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:35:39,115 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 15:35:39,115 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 6 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-18 15:35:39,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:35:39,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 15:35:39,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 15:35:39,118 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 15:35:39,135 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-18 15:35:39,319 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-18 15:35:39,322 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2024-09-18 15:35:39,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 15:35:39,773 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 15:35:39,781 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#array~0!offset [2024-09-18 15:35:39,784 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-18 15:35:39,784 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] [2024-09-18 15:35:39,784 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-18 15:35:39,785 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] [2024-09-18 15:35:39,785 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-18 15:35:39,785 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] [2024-09-18 15:35:39,785 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-18 15:35:39,785 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] [2024-09-18 15:35:39,786 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#array~0!offset [2024-09-18 15:35:39,790 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#array~0!offset [2024-09-18 15:35:39,791 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#array~0!offset [2024-09-18 15:35:39,791 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#array~0!offset [2024-09-18 15:35:39,791 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-18 15:35:39,791 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] [2024-09-18 15:35:39,791 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-18 15:35:39,792 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] [2024-09-18 15:35:39,792 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#array~0!offset [2024-09-18 15:35:39,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 03:35:39 BoogieIcfgContainer [2024-09-18 15:35:39,798 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 15:35:39,799 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 15:35:39,799 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 15:35:39,799 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 15:35:39,799 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:35:30" (3/4) ... [2024-09-18 15:35:39,801 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 15:35:39,856 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 15:35:39,856 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 15:35:39,857 INFO L158 Benchmark]: Toolchain (without parser) took 9917.22ms. Allocated memory was 176.2MB in the beginning and 306.2MB in the end (delta: 130.0MB). Free memory was 104.0MB in the beginning and 249.6MB in the end (delta: -145.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:35:39,857 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 176.2MB. Free memory is still 127.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:35:39,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.62ms. Allocated memory is still 176.2MB. Free memory was 103.8MB in the beginning and 92.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-18 15:35:39,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.49ms. Allocated memory is still 176.2MB. Free memory was 91.9MB in the beginning and 91.0MB in the end (delta: 906.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:35:39,858 INFO L158 Benchmark]: Boogie Preprocessor took 41.60ms. Allocated memory is still 176.2MB. Free memory was 91.0MB in the beginning and 89.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:35:39,858 INFO L158 Benchmark]: RCFGBuilder took 338.17ms. Allocated memory was 176.2MB in the beginning and 253.8MB in the end (delta: 77.6MB). Free memory was 89.0MB in the beginning and 215.5MB in the end (delta: -126.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-18 15:35:39,858 INFO L158 Benchmark]: TraceAbstraction took 9236.45ms. Allocated memory was 253.8MB in the beginning and 306.2MB in the end (delta: 52.4MB). Free memory was 215.5MB in the beginning and 251.7MB in the end (delta: -36.3MB). Peak memory consumption was 172.7MB. Max. memory is 16.1GB. [2024-09-18 15:35:39,859 INFO L158 Benchmark]: Witness Printer took 57.37ms. Allocated memory is still 306.2MB. Free memory was 251.7MB in the beginning and 249.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:35:39,861 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 176.2MB. Free memory is still 127.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.62ms. Allocated memory is still 176.2MB. Free memory was 103.8MB in the beginning and 92.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.49ms. Allocated memory is still 176.2MB. Free memory was 91.9MB in the beginning and 91.0MB in the end (delta: 906.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.60ms. Allocated memory is still 176.2MB. Free memory was 91.0MB in the beginning and 89.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 338.17ms. Allocated memory was 176.2MB in the beginning and 253.8MB in the end (delta: 77.6MB). Free memory was 89.0MB in the beginning and 215.5MB in the end (delta: -126.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 9236.45ms. Allocated memory was 253.8MB in the beginning and 306.2MB in the end (delta: 52.4MB). Free memory was 215.5MB in the beginning and 251.7MB in the end (delta: -36.3MB). Peak memory consumption was 172.7MB. Max. memory is 16.1GB. * Witness Printer took 57.37ms. Allocated memory is still 306.2MB. Free memory was 251.7MB in the beginning and 249.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#array~0!offset - 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[~#array~0!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[~#array~0!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[~#array~0!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[~#array~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#array~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#array~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#array~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#array~0!offset - 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[~#array~0!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[~#array~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#array~0!offset * 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: 26]: 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, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.7s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 1039 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 836 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 867 IncrementalHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 203 mSDtfsCounter, 867 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 405 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=6, InterpolantAutomatonStates: 65, 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, 7 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 404 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 496 ConstructedInterpolants, 0 QuantifiedInterpolants, 1042 SizeOfPredicates, 11 NumberOfNonLiveVariables, 539 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 194/296 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 - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((((index1 + 1) <= index2) && (index2 <= 99999)) || (((((4294967295 + index1) % 4294967296) + 1) <= (index2 + 1)) && ((index2 + 1) <= 99999))) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((loop_entered == 0) && (i == 0)) || ((loop_entered == 0) && (((i + 4294967295) % 4294967296) <= 99999))) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((loop_entered == 0) && (index2 <= 99999)) || (((((4294967295 + index1) % 4294967296) + 1) <= (index2 + 1)) && ((index2 + 1) <= 99999))) - ProcedureContractResult [Line: 20]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 23]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-18 15:35:39,894 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE