./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/fermat1-ll_valuebound1.yml/witness-2.1.yml --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/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c ../results/automizer-verification-files/SV-COMP24_unreach-call/fermat1-ll_valuebound1.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 19:47:26,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:47:26,363 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:47:26,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:47:26,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:47:26,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:47:26,398 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:47:26,398 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:47:26,399 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:47:26,400 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:47:26,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:47:26,401 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:47:26,402 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:47:26,403 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:47:26,404 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:47:26,404 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:47:26,404 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:47:26,405 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:47:26,405 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:47:26,405 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:47:26,405 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:47:26,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:47:26,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:47:26,409 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:47:26,409 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:47:26,410 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:47:26,410 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:47:26,410 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:47:26,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:47:26,411 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:47:26,412 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:47:26,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:47:26,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:47:26,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:47:26,412 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:47:26,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:47:26,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:47:26,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:47:26,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:47:26,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:47:26,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:47:26,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:47:26,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-17 19:47:26,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:47:26,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:47:26,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:47:26,668 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:47:26,668 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:47:26,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c [2024-09-17 19:47:28,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:47:28,182 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:47:28,183 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c [2024-09-17 19:47:28,189 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/aa6cf8374/247a3cfab78f4ceda48bf5d359ffd8c1/FLAG6141a164e [2024-09-17 19:47:28,200 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/aa6cf8374/247a3cfab78f4ceda48bf5d359ffd8c1 [2024-09-17 19:47:28,202 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-17 19:47:28,203 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-17 19:47:28,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/fermat1-ll_valuebound1.yml/witness-2.1.yml [2024-09-17 19:47:28,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:47:28,262 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-17 19:47:28,264 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:47:28,264 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:47:28,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:47:28,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:47:28" (1/2) ... [2024-09-17 19:47:28,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2160b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:47:28, skipping insertion in model container [2024-09-17 19:47:28,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:47:28" (1/2) ... [2024-09-17 19:47:28,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5151e20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:47:28, skipping insertion in model container [2024-09-17 19:47:28,273 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:47:28" (2/2) ... [2024-09-17 19:47:28,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2160b and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28, skipping insertion in model container [2024-09-17 19:47:28,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:47:28" (2/2) ... [2024-09-17 19:47:28,284 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-17 19:47:28,285 INFO L1541 ArrayList]: Loop invariant at [L40-L46] ((((__int128) v * 2) + ((__int128) u * u)) == (((((__int128) v * v) + ((__int128) u * 2)) + ((long long) A * 4)) + ((__int128) r * 4))) [2024-09-17 19:47:28,285 INFO L1541 ArrayList]: Loop invariant at [L48-L54] ((((__int128) v * 2) + ((__int128) u * u)) == (((((__int128) v * v) + ((__int128) u * 2)) + ((long long) A * 4)) + ((__int128) r * 4))) [2024-09-17 19:47:28,286 INFO L1541 ArrayList]: Loop invariant at [L35-L55] ((((__int128) v * 2) + ((__int128) u * u)) == (((((__int128) v * v) + ((__int128) u * 2)) + ((long long) A * 4)) + ((__int128) r * 4))) [2024-09-17 19:47:28,286 INFO L1541 ArrayList]: Function contract at [L11]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-17 19:47:28,303 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:47:28,466 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/nla-digbench-scaling/fermat1-ll_valuebound1.c[535,548] [2024-09-17 19:47:28,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:47:28,494 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-17 19:47:28,543 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/nla-digbench-scaling/fermat1-ll_valuebound1.c[535,548] Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-17 19:47:28,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:47:28,572 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:47:28,572 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28 WrapperNode [2024-09-17 19:47:28,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:47:28,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:47:28,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:47:28,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:47:28,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28" (1/1) ... [2024-09-17 19:47:28,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28" (1/1) ... [2024-09-17 19:47:28,602 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-09-17 19:47:28,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:47:28,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:47:28,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:47:28,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:47:28,612 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28" (1/1) ... [2024-09-17 19:47:28,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28" (1/1) ... [2024-09-17 19:47:28,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28" (1/1) ... [2024-09-17 19:47:28,622 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-17 19:47:28,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28" (1/1) ... [2024-09-17 19:47:28,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28" (1/1) ... [2024-09-17 19:47:28,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28" (1/1) ... [2024-09-17 19:47:28,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28" (1/1) ... [2024-09-17 19:47:28,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28" (1/1) ... [2024-09-17 19:47:28,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28" (1/1) ... [2024-09-17 19:47:28,635 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:47:28,636 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:47:28,636 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:47:28,636 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:47:28,637 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28" (1/1) ... [2024-09-17 19:47:28,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:47:28,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:47:28,662 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) [2024-09-17 19:47:28,664 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 [2024-09-17 19:47:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:47:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 19:47:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 19:47:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-17 19:47:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:47:28,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:47:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 19:47:28,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 19:47:28,752 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:47:28,754 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:47:28,908 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-17 19:47:28,938 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-09-17 19:47:28,939 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:47:28,961 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:47:28,961 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-17 19:47:28,961 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:47:28 BoogieIcfgContainer [2024-09-17 19:47:28,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:47:28,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:47:28,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:47:28,971 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:47:28,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:47:28" (1/4) ... [2024-09-17 19:47:28,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78951212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:47:28, skipping insertion in model container [2024-09-17 19:47:28,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:47:28" (2/4) ... [2024-09-17 19:47:28,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78951212 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 17.09 07:47:28, skipping insertion in model container [2024-09-17 19:47:28,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:47:28" (3/4) ... [2024-09-17 19:47:28,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78951212 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 17.09 07:47:28, skipping insertion in model container [2024-09-17 19:47:28,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:47:28" (4/4) ... [2024-09-17 19:47:28,974 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound1.c [2024-09-17 19:47:28,986 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:47:28,987 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-09-17 19:47:29,035 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:47:29,041 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=None, 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;@7f66c892, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:47:29,042 INFO L337 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-09-17 19:47:29,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 29 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 19:47:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-17 19:47:29,058 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:47:29,059 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:47:29,059 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-17 19:47:29,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:47:29,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1887295452, now seen corresponding path program 1 times [2024-09-17 19:47:29,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:47:29,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125174985] [2024-09-17 19:47:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:47:29,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:47:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:29,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:47:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:29,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-17 19:47:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:29,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:47:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:29,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:47:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 19:47:29,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:47:29,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125174985] [2024-09-17 19:47:29,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125174985] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:47:29,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:47:29,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 19:47:29,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92132492] [2024-09-17 19:47:29,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:47:29,243 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 19:47:29,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:47:29,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 19:47:29,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:47:29,266 INFO L87 Difference]: Start difference. First operand has 40 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 29 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 19:47:29,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:47:29,291 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-09-17 19:47:29,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 19:47:29,294 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2024-09-17 19:47:29,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:47:29,300 INFO L225 Difference]: With dead ends: 40 [2024-09-17 19:47:29,300 INFO L226 Difference]: Without dead ends: 38 [2024-09-17 19:47:29,302 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:47:29,305 INFO L434 NwaCegarLoop]: 45 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, 45 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 [2024-09-17 19:47:29,306 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:47:29,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-17 19:47:29,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-09-17 19:47:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-17 19:47:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-09-17 19:47:29,340 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2024-09-17 19:47:29,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:47:29,341 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-09-17 19:47:29,341 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 19:47:29,342 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-09-17 19:47:29,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-17 19:47:29,344 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:47:29,344 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:47:29,344 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:47:29,345 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-17 19:47:29,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:47:29,345 INFO L85 PathProgramCache]: Analyzing trace with hash 638953632, now seen corresponding path program 1 times [2024-09-17 19:47:29,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:47:29,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024419012] [2024-09-17 19:47:29,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:47:29,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:47:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:47:29,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572776777] [2024-09-17 19:47:29,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:47:29,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:47:29,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:47:29,428 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) [2024-09-17 19:47:29,432 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 19:47:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:29,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 19:47:29,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:47:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 19:47:29,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:47:29,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:47:29,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024419012] [2024-09-17 19:47:29,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:47:29,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572776777] [2024-09-17 19:47:29,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572776777] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:47:29,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:47:29,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 19:47:29,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252503405] [2024-09-17 19:47:29,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:47:29,708 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-17 19:47:29,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:47:29,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-17 19:47:29,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:47:29,711 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:47:32,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 19:47:35,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 19:47:35,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:47:35,133 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2024-09-17 19:47:35,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 19:47:35,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2024-09-17 19:47:35,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:47:35,135 INFO L225 Difference]: With dead ends: 50 [2024-09-17 19:47:35,135 INFO L226 Difference]: Without dead ends: 50 [2024-09-17 19:47:35,136 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:47:35,136 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 9 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-09-17 19:47:35,137 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-09-17 19:47:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-17 19:47:35,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-17 19:47:35,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.34375) internal successors, (43), 37 states have internal predecessors, (43), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 19:47:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2024-09-17 19:47:35,147 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 24 [2024-09-17 19:47:35,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:47:35,149 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2024-09-17 19:47:35,149 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:47:35,149 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2024-09-17 19:47:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-17 19:47:35,150 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:47:35,150 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:47:35,167 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 19:47:35,354 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:47:35,355 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-17 19:47:35,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:47:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash 556614719, now seen corresponding path program 1 times [2024-09-17 19:47:35,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:47:35,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091041143] [2024-09-17 19:47:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:47:35,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:47:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:47:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-17 19:47:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:47:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:47:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 19:47:35,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:47:35,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091041143] [2024-09-17 19:47:35,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091041143] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:47:35,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:47:35,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-17 19:47:35,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205033384] [2024-09-17 19:47:35,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:47:35,546 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-17 19:47:35,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:47:35,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-17 19:47:35,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:47:35,547 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:47:35,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:47:35,561 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2024-09-17 19:47:35,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 19:47:35,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2024-09-17 19:47:35,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:47:35,563 INFO L225 Difference]: With dead ends: 48 [2024-09-17 19:47:35,563 INFO L226 Difference]: Without dead ends: 48 [2024-09-17 19:47:35,563 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:47:35,564 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:47:35,565 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:47:35,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-17 19:47:35,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-17 19:47:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 35 states have internal predecessors, (41), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 19:47:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2024-09-17 19:47:35,578 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 29 [2024-09-17 19:47:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:47:35,579 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2024-09-17 19:47:35,579 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:47:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2024-09-17 19:47:35,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-17 19:47:35,580 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:47:35,580 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:47:35,581 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-17 19:47:35,581 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-17 19:47:35,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:47:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash 556614880, now seen corresponding path program 1 times [2024-09-17 19:47:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:47:35,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719977139] [2024-09-17 19:47:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:47:35,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:47:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:47:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-17 19:47:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:47:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:47:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 19:47:35,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:47:35,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719977139] [2024-09-17 19:47:35,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719977139] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:47:35,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:47:35,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 19:47:35,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719988871] [2024-09-17 19:47:35,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:47:35,665 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-17 19:47:35,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:47:35,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-17 19:47:35,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:47:35,666 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:47:35,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:47:35,696 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2024-09-17 19:47:35,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 19:47:35,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2024-09-17 19:47:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:47:35,699 INFO L225 Difference]: With dead ends: 47 [2024-09-17 19:47:35,700 INFO L226 Difference]: Without dead ends: 47 [2024-09-17 19:47:35,701 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:47:35,702 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:47:35,704 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:47:35,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-17 19:47:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-17 19:47:35,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 34 states have internal predecessors, (40), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 19:47:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2024-09-17 19:47:35,713 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 29 [2024-09-17 19:47:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:47:35,714 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2024-09-17 19:47:35,715 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:47:35,715 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2024-09-17 19:47:35,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-17 19:47:35,716 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:47:35,716 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:47:35,716 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-17 19:47:35,716 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-17 19:47:35,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:47:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash -754765924, now seen corresponding path program 1 times [2024-09-17 19:47:35,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:47:35,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95151733] [2024-09-17 19:47:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:47:35,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:47:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:47:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-17 19:47:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:47:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:47:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-17 19:47:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 19:47:35,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:47:35,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95151733] [2024-09-17 19:47:35,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95151733] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:47:35,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:47:35,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-17 19:47:35,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676772870] [2024-09-17 19:47:35,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:47:35,960 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-17 19:47:35,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:47:35,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-17 19:47:35,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-17 19:47:35,961 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:47:36,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:47:36,072 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2024-09-17 19:47:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-17 19:47:36,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-09-17 19:47:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:47:36,073 INFO L225 Difference]: With dead ends: 49 [2024-09-17 19:47:36,073 INFO L226 Difference]: Without dead ends: 48 [2024-09-17 19:47:36,074 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-17 19:47:36,074 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:47:36,075 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 45 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:47:36,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-17 19:47:36,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2024-09-17 19:47:36,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 states have internal predecessors, (37), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 19:47:36,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-09-17 19:47:36,084 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 32 [2024-09-17 19:47:36,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:47:36,085 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-09-17 19:47:36,085 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:47:36,085 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-09-17 19:47:36,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-17 19:47:36,087 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:47:36,087 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:47:36,087 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-17 19:47:36,087 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-17 19:47:36,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:47:36,088 INFO L85 PathProgramCache]: Analyzing trace with hash 752447644, now seen corresponding path program 1 times [2024-09-17 19:47:36,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:47:36,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485622683] [2024-09-17 19:47:36,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:47:36,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:47:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:36,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:47:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:36,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-17 19:47:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:36,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:47:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:36,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:47:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:36,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-17 19:47:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:36,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-17 19:47:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-17 19:47:36,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:47:36,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485622683] [2024-09-17 19:47:36,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485622683] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:47:36,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818294236] [2024-09-17 19:47:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:47:36,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:47:36,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:47:36,327 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) [2024-09-17 19:47:36,355 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 19:47:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:36,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-17 19:47:36,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:47:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-17 19:47:36,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:47:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-17 19:47:36,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818294236] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:47:36,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:47:36,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-09-17 19:47:36,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223254558] [2024-09-17 19:47:36,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:47:36,699 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-17 19:47:36,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:47:36,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-17 19:47:36,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-17 19:47:36,701 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 10 states, 8 states have (on average 2.75) internal successors, (22), 6 states have internal predecessors, (22), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-17 19:47:36,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:47:36,851 INFO L93 Difference]: Finished difference Result 69 states and 95 transitions. [2024-09-17 19:47:36,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-17 19:47:36,852 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 6 states have internal predecessors, (22), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 40 [2024-09-17 19:47:36,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:47:36,853 INFO L225 Difference]: With dead ends: 69 [2024-09-17 19:47:36,853 INFO L226 Difference]: Without dead ends: 69 [2024-09-17 19:47:36,853 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-17 19:47:36,854 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:47:36,854 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 123 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:47:36,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-17 19:47:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-09-17 19:47:36,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 50 states have internal predecessors, (63), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 19:47:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2024-09-17 19:47:36,861 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 40 [2024-09-17 19:47:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:47:36,861 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2024-09-17 19:47:36,861 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 6 states have internal predecessors, (22), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-17 19:47:36,861 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2024-09-17 19:47:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-17 19:47:36,863 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:47:36,863 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:47:36,880 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-17 19:47:37,063 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-17 19:47:37,064 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-17 19:47:37,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:47:37,065 INFO L85 PathProgramCache]: Analyzing trace with hash -108633146, now seen corresponding path program 1 times [2024-09-17 19:47:37,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:47:37,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854634549] [2024-09-17 19:47:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:47:37,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:47:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:47:37,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189918995] [2024-09-17 19:47:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:47:37,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:47:37,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:47:37,102 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) [2024-09-17 19:47:37,104 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 19:47:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:47:37,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 19:47:37,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:47:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-09-17 19:47:37,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:47:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-09-17 19:47:37,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:47:37,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854634549] [2024-09-17 19:47:37,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:47:37,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189918995] [2024-09-17 19:47:37,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189918995] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-17 19:47:37,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 19:47:37,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-09-17 19:47:37,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862991361] [2024-09-17 19:47:37,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:47:37,597 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-17 19:47:37,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:47:37,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-17 19:47:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:47:37,597 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-17 19:47:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:47:37,628 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2024-09-17 19:47:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 19:47:37,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2024-09-17 19:47:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:47:37,629 INFO L225 Difference]: With dead ends: 63 [2024-09-17 19:47:37,630 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 19:47:37,630 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:47:37,630 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:47:37,631 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:47:37,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 19:47:37,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 19:47:37,631 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) [2024-09-17 19:47:37,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 19:47:37,632 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2024-09-17 19:47:37,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:47:37,632 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 19:47:37,632 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-17 19:47:37,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 19:47:37,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 19:47:37,635 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 9 remaining) [2024-09-17 19:47:37,635 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (7 of 9 remaining) [2024-09-17 19:47:37,635 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 9 remaining) [2024-09-17 19:47:37,635 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (5 of 9 remaining) [2024-09-17 19:47:37,635 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 9 remaining) [2024-09-17 19:47:37,636 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (3 of 9 remaining) [2024-09-17 19:47:37,636 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (2 of 9 remaining) [2024-09-17 19:47:37,636 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2024-09-17 19:47:37,636 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 9 remaining) [2024-09-17 19:47:37,650 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-17 19:47:37,840 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-17 19:47:37,843 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:47:37,845 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 19:47:37,846 INFO L469 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-09-17 19:47:37,846 INFO L470 ceAbstractionStarter]: WitnessConsidered=3 [2024-09-17 19:47:37,847 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 07:47:37 BoogieIcfgContainer [2024-09-17 19:47:37,847 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 19:47:37,848 INFO L158 Benchmark]: Toolchain (without parser) took 9586.27ms. Allocated memory was 146.8MB in the beginning and 201.3MB in the end (delta: 54.5MB). Free memory was 74.0MB in the beginning and 78.0MB in the end (delta: -4.0MB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. [2024-09-17 19:47:37,848 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 146.8MB. Free memory is still 98.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:47:37,848 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:47:37,849 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.89ms. Allocated memory was 146.8MB in the beginning and 201.3MB in the end (delta: 54.5MB). Free memory was 73.7MB in the beginning and 171.1MB in the end (delta: -97.4MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2024-09-17 19:47:37,849 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.14ms. Allocated memory is still 201.3MB. Free memory was 171.1MB in the beginning and 170.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:47:37,849 INFO L158 Benchmark]: Boogie Preprocessor took 32.96ms. Allocated memory is still 201.3MB. Free memory was 170.0MB in the beginning and 167.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:47:37,849 INFO L158 Benchmark]: RCFGBuilder took 325.61ms. Allocated memory is still 201.3MB. Free memory was 167.9MB in the beginning and 150.9MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-17 19:47:37,850 INFO L158 Benchmark]: TraceAbstraction took 8883.68ms. Allocated memory is still 201.3MB. Free memory was 150.1MB in the beginning and 78.0MB in the end (delta: 72.1MB). Peak memory consumption was 70.0MB. Max. memory is 16.1GB. [2024-09-17 19:47:37,851 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 146.8MB. Free memory is still 98.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.89ms. Allocated memory was 146.8MB in the beginning and 201.3MB in the end (delta: 54.5MB). Free memory was 73.7MB in the beginning and 171.1MB in the end (delta: -97.4MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.14ms. Allocated memory is still 201.3MB. Free memory was 171.1MB in the beginning and 170.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.96ms. Allocated memory is still 201.3MB. Free memory was 170.0MB in the beginning and 167.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 325.61ms. Allocated memory is still 201.3MB. Free memory was 167.9MB in the beginning and 150.9MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8883.68ms. Allocated memory is still 201.3MB. Free memory was 150.1MB in the beginning and 78.0MB in the end (delta: 72.1MB). Peak memory consumption was 70.0MB. Max. memory is 16.1GB. * 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: 35]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 11]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 40]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 11]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 48]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 11]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 11]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 11]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 40 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 8.8s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 467 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 239 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 259 IncrementalHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 228 mSDtfsCounter, 259 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 292 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=6, InterpolantAutomatonStates: 25, 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 386 NumberOfCodeBlocks, 386 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 392 ConstructedInterpolants, 0 QuantifiedInterpolants, 1352 SizeOfPredicates, 2 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 383/403 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-17 19:47:37,868 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE