./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/ps5-ll_valuebound2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/ps5-ll_valuebound2.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-04d6fb3-m [2024-09-15 20:24:09,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:24:09,495 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:24:09,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:24:09,503 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:24:09,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:24:09,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:24:09,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:24:09,541 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:24:09,544 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:24:09,544 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:24:09,547 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:24:09,548 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:24:09,548 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:24:09,548 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:24:09,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:24:09,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:24:09,548 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:24:09,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:24:09,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:24:09,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:24:09,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:24:09,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:24:09,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:24:09,551 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:24:09,551 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:24:09,551 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:24:09,551 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:24:09,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:24:09,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:24:09,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:24:09,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:24:09,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:24:09,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:24:09,552 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:24:09,553 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:24:09,553 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:24:09,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:24:09,553 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:24:09,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:24:09,553 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:24:09,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:24:09,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:24:09,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:24:09,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:24:09,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:24:09,877 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:24:09,877 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:24:09,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/ps5-ll_valuebound2.yml/witness-2.1.yml [2024-09-15 20:24:09,918 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:24:09,919 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:24:09,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c [2024-09-15 20:24:11,242 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:24:11,380 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:24:11,381 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c [2024-09-15 20:24:11,386 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/6c0f9c105/02f6147b7e054f8d912d0e38c5b0c17c/FLAG46611d1ff [2024-09-15 20:24:11,400 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/6c0f9c105/02f6147b7e054f8d912d0e38c5b0c17c [2024-09-15 20:24:11,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:24:11,401 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:24:11,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:24:11,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:24:11,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:24:11,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:24:09" (1/2) ... [2024-09-15 20:24:11,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30464d4e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:24:11, skipping insertion in model container [2024-09-15 20:24:11,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:24:09" (1/2) ... [2024-09-15 20:24:11,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@70a09c79 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:24:11, skipping insertion in model container [2024-09-15 20:24:11,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:24:11" (2/2) ... [2024-09-15 20:24:11,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30464d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11, skipping insertion in model container [2024-09-15 20:24:11,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:24:11" (2/2) ... [2024-09-15 20:24:11,416 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:24:11,418 INFO L1541 ArrayList]: Loop invariant at [L28-L37] ((((((0 <= k) && (((__int128) y * y) == ((__int128) k * y))) && ((c + ((__int128) c * y)) == (y + ((__int128) y * y)))) && (k <= 2)) && ((y + ((__int128) 30 * x)) == (((((((__int128) y * y) * y) * y) * 15) + (6 * (((((__int128) y * y) * y) * y) * y))) + ((((__int128) y * y) * y) * 10)))) || (((((1 <= k) && (y == 1)) && (k <= 2)) && (x == 1)) && (c == 1))) [2024-09-15 20:24:11,418 INFO L1541 ArrayList]: Function contract at [L6]: requires null, ensures (\old(cond) != 0) [2024-09-15 20:24:11,418 INFO L1541 ArrayList]: Function contract at [L9]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-15 20:24:11,434 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:24:11,553 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/ps5-ll_valuebound2.c[458,471] [2024-09-15 20:24:11,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:24:11,580 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-15 20:24:11,612 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/ps5-ll_valuebound2.c[458,471] Start Parsing Local [2024-09-15 20:24:11,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:24:11,654 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:24:11,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11 WrapperNode [2024-09-15 20:24:11,658 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:24:11,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:24:11,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:24:11,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:24:11,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11" (1/1) ... [2024-09-15 20:24:11,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11" (1/1) ... [2024-09-15 20:24:11,690 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2024-09-15 20:24:11,690 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:24:11,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:24:11,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:24:11,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:24:11,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11" (1/1) ... [2024-09-15 20:24:11,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11" (1/1) ... [2024-09-15 20:24:11,701 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11" (1/1) ... [2024-09-15 20:24:11,706 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure assume_abort_if_not is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-15 20:24:11,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11" (1/1) ... [2024-09-15 20:24:11,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11" (1/1) ... [2024-09-15 20:24:11,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11" (1/1) ... [2024-09-15 20:24:11,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11" (1/1) ... [2024-09-15 20:24:11,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11" (1/1) ... [2024-09-15 20:24:11,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11" (1/1) ... [2024-09-15 20:24:11,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:24:11,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:24:11,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:24:11,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:24:11,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11" (1/1) ... [2024-09-15 20:24:11,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:24:11,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:24:11,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 20:24:11,754 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 20:24:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:24:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-15 20:24:11,791 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-15 20:24:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-15 20:24:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:24:11,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:24:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 20:24:11,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 20:24:11,839 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:24:11,841 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:24:11,972 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-15 20:24:11,997 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-09-15 20:24:11,997 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:24:12,014 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:24:12,014 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-15 20:24:12,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:24:12 BoogieIcfgContainer [2024-09-15 20:24:12,016 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:24:12,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:24:12,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:24:12,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:24:12,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:24:09" (1/4) ... [2024-09-15 20:24:12,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7a3fac and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:24:12, skipping insertion in model container [2024-09-15 20:24:12,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:24:11" (2/4) ... [2024-09-15 20:24:12,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7a3fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:24:12, skipping insertion in model container [2024-09-15 20:24:12,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:24:11" (3/4) ... [2024-09-15 20:24:12,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7a3fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:24:12, skipping insertion in model container [2024-09-15 20:24:12,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:24:12" (4/4) ... [2024-09-15 20:24:12,025 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound2.c [2024-09-15 20:24:12,042 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:24:12,043 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-09-15 20:24:12,088 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:24:12,094 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;@2ed467ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:24:12,095 INFO L337 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-09-15 20:24:12,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.5625) internal successors, (25), 20 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 20:24:12,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:24:12,108 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:24:12,108 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:24:12,109 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-15 20:24:12,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:24:12,115 INFO L85 PathProgramCache]: Analyzing trace with hash 93161522, now seen corresponding path program 1 times [2024-09-15 20:24:12,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:24:12,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938157170] [2024-09-15 20:24:12,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:24:12,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:24:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:24:12,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:24:12,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938157170] [2024-09-15 20:24:12,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938157170] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:24:12,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:24:12,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:24:12,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090412143] [2024-09-15 20:24:12,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:24:12,256 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 20:24:12,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:24:12,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 20:24:12,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 20:24:12,284 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 1.5625) internal successors, (25), 20 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:24:12,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:24:12,315 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2024-09-15 20:24:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 20:24:12,318 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-15 20:24:12,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:24:12,323 INFO L225 Difference]: With dead ends: 28 [2024-09-15 20:24:12,323 INFO L226 Difference]: Without dead ends: 26 [2024-09-15 20:24:12,328 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 20:24:12,335 INFO L434 NwaCegarLoop]: 28 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, 28 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 [2024-09-15 20:24:12,337 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:24:12,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-15 20:24:12,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-15 20:24:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 19 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 20:24:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-15 20:24:12,419 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 5 [2024-09-15 20:24:12,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:24:12,420 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-15 20:24:12,420 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:24:12,420 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-15 20:24:12,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:24:12,421 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:24:12,421 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:24:12,422 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:24:12,422 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-15 20:24:12,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:24:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash 93161584, now seen corresponding path program 1 times [2024-09-15 20:24:12,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:24:12,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028263779] [2024-09-15 20:24:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:24:12,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:24:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:24:12,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:24:12,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028263779] [2024-09-15 20:24:12,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028263779] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:24:12,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:24:12,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:24:12,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341744756] [2024-09-15 20:24:12,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:24:12,556 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:24:12,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:24:12,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:24:12,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:24:12,557 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:24:12,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:24:12,586 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-09-15 20:24:12,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:24:12,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-15 20:24:12,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:24:12,589 INFO L225 Difference]: With dead ends: 25 [2024-09-15 20:24:12,590 INFO L226 Difference]: Without dead ends: 25 [2024-09-15 20:24:12,590 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:24:12,591 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:24:12,591 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:24:12,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-15 20:24:12,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-15 20:24:12,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 20:24:12,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-09-15 20:24:12,595 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2024-09-15 20:24:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:24:12,595 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-09-15 20:24:12,595 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:24:12,596 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-09-15 20:24:12,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-15 20:24:12,597 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:24:12,597 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:24:12,597 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 20:24:12,597 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-15 20:24:12,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:24:12,599 INFO L85 PathProgramCache]: Analyzing trace with hash -985219255, now seen corresponding path program 1 times [2024-09-15 20:24:12,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:24:12,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930179618] [2024-09-15 20:24:12,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:24:12,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:24:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:24:12,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234170972] [2024-09-15 20:24:12,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:24:12,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:24:12,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:24:12,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:24:12,637 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 20:24:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:12,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-15 20:24:12,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:24:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 20:24:12,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:24:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 20:24:12,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:24:12,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930179618] [2024-09-15 20:24:12,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:24:12,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234170972] [2024-09-15 20:24:12,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234170972] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:24:12,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:24:13,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-09-15 20:24:13,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470508426] [2024-09-15 20:24:13,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 20:24:13,000 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-15 20:24:13,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:24:13,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-15 20:24:13,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-15 20:24:13,001 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 20:24:13,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:24:13,315 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-09-15 20:24:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 20:24:13,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-15 20:24:13,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:24:13,316 INFO L225 Difference]: With dead ends: 31 [2024-09-15 20:24:13,316 INFO L226 Difference]: Without dead ends: 31 [2024-09-15 20:24:13,317 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:24:13,317 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 20:24:13,318 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 94 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 20:24:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-15 20:24:13,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2024-09-15 20:24:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 21 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 20:24:13,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-09-15 20:24:13,322 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 13 [2024-09-15 20:24:13,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:24:13,323 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-09-15 20:24:13,323 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 20:24:13,323 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-09-15 20:24:13,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-15 20:24:13,324 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:24:13,324 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:24:13,337 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 20:24:13,524 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:24:13,525 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-15 20:24:13,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:24:13,526 INFO L85 PathProgramCache]: Analyzing trace with hash 56458865, now seen corresponding path program 1 times [2024-09-15 20:24:13,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:24:13,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365703929] [2024-09-15 20:24:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:24:13,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:24:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:13,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:24:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:13,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 20:24:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 20:24:13,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:24:13,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365703929] [2024-09-15 20:24:13,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365703929] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:24:13,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:24:13,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:24:13,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844305619] [2024-09-15 20:24:13,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:24:13,653 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:24:13,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:24:13,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:24:13,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:24:13,654 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:24:13,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:24:13,664 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-09-15 20:24:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:24:13,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-09-15 20:24:13,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:24:13,667 INFO L225 Difference]: With dead ends: 26 [2024-09-15 20:24:13,667 INFO L226 Difference]: Without dead ends: 26 [2024-09-15 20:24:13,671 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:24:13,672 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 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 [2024-09-15 20:24:13,672 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:24:13,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-15 20:24:13,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-15 20:24:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 19 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 20:24:13,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-09-15 20:24:13,679 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 18 [2024-09-15 20:24:13,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:24:13,679 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-09-15 20:24:13,679 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:24:13,679 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-09-15 20:24:13,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-15 20:24:13,679 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:24:13,680 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:24:13,680 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-15 20:24:13,680 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-15 20:24:13,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:24:13,681 INFO L85 PathProgramCache]: Analyzing trace with hash 56459026, now seen corresponding path program 1 times [2024-09-15 20:24:13,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:24:13,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674885139] [2024-09-15 20:24:13,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:24:13,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:24:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:13,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:24:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:13,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 20:24:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 20:24:13,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:24:13,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674885139] [2024-09-15 20:24:13,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674885139] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:24:13,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:24:13,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:24:13,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229461831] [2024-09-15 20:24:13,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:24:13,736 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:24:13,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:24:13,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:24:13,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:24:13,737 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:24:13,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:24:13,751 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-09-15 20:24:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:24:13,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-09-15 20:24:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:24:13,752 INFO L225 Difference]: With dead ends: 25 [2024-09-15 20:24:13,753 INFO L226 Difference]: Without dead ends: 25 [2024-09-15 20:24:13,753 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:24:13,754 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:24:13,755 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:24:13,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-15 20:24:13,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-15 20:24:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 20:24:13,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-09-15 20:24:13,759 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2024-09-15 20:24:13,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:24:13,759 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-09-15 20:24:13,759 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:24:13,760 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-09-15 20:24:13,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-15 20:24:13,760 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:24:13,760 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:24:13,760 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-15 20:24:13,761 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-15 20:24:13,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:24:13,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1656305996, now seen corresponding path program 1 times [2024-09-15 20:24:13,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:24:13,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869439257] [2024-09-15 20:24:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:24:13,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:24:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:13,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:24:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:13,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 20:24:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:13,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-15 20:24:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 20:24:13,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:24:13,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869439257] [2024-09-15 20:24:13,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869439257] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:24:13,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:24:13,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:24:13,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034486133] [2024-09-15 20:24:13,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:24:13,878 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:24:13,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:24:13,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:24:13,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:24:13,879 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 20:24:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:24:13,926 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-09-15 20:24:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:24:13,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-15 20:24:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:24:13,927 INFO L225 Difference]: With dead ends: 23 [2024-09-15 20:24:13,927 INFO L226 Difference]: Without dead ends: 23 [2024-09-15 20:24:13,927 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:24:13,928 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:24:13,928 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 33 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:24:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-15 20:24:13,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-09-15 20:24:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 20:24:13,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-09-15 20:24:13,931 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 21 [2024-09-15 20:24:13,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:24:13,932 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-09-15 20:24:13,932 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 20:24:13,932 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-09-15 20:24:13,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-15 20:24:13,932 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:24:13,932 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:24:13,933 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-15 20:24:13,933 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-15 20:24:13,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:24:13,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1656305955, now seen corresponding path program 1 times [2024-09-15 20:24:13,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:24:13,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648630234] [2024-09-15 20:24:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:24:13,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:24:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:24:13,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857669491] [2024-09-15 20:24:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:24:13,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:24:13,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:24:13,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:24:13,949 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 20:24:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:13,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-15 20:24:13,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:24:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 20:24:14,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:24:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 20:24:14,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:24:14,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648630234] [2024-09-15 20:24:14,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:24:14,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857669491] [2024-09-15 20:24:14,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857669491] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:24:14,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:24:14,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-09-15 20:24:14,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635899722] [2024-09-15 20:24:14,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 20:24:14,446 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 20:24:14,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:24:14,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 20:24:14,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:24:14,447 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-15 20:24:14,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:24:14,559 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2024-09-15 20:24:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 20:24:14,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 21 [2024-09-15 20:24:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:24:14,564 INFO L225 Difference]: With dead ends: 30 [2024-09-15 20:24:14,564 INFO L226 Difference]: Without dead ends: 30 [2024-09-15 20:24:14,564 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-15 20:24:14,565 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:24:14,565 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 72 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:24:14,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-15 20:24:14,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2024-09-15 20:24:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 20:24:14,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-09-15 20:24:14,569 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 21 [2024-09-15 20:24:14,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:24:14,569 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-09-15 20:24:14,569 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-15 20:24:14,569 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-09-15 20:24:14,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-15 20:24:14,570 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:24:14,570 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:24:14,584 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 20:24:14,770 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-15 20:24:14,770 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-15 20:24:14,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:24:14,771 INFO L85 PathProgramCache]: Analyzing trace with hash 282739407, now seen corresponding path program 1 times [2024-09-15 20:24:14,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:24:14,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938688381] [2024-09-15 20:24:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:24:14,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:24:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:14,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:24:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:14,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 20:24:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:14,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-15 20:24:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:14,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 20:24:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-15 20:24:14,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:24:14,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938688381] [2024-09-15 20:24:14,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938688381] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:24:14,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:24:14,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:24:14,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798785138] [2024-09-15 20:24:14,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:24:14,906 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:24:14,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:24:14,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:24:14,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:24:14,906 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 20:24:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:24:14,955 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2024-09-15 20:24:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:24:14,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-09-15 20:24:14,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:24:14,955 INFO L225 Difference]: With dead ends: 30 [2024-09-15 20:24:14,955 INFO L226 Difference]: Without dead ends: 28 [2024-09-15 20:24:14,956 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:24:14,956 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:24:14,956 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 46 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:24:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-15 20:24:14,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-15 20:24:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 20:24:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-09-15 20:24:14,966 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 26 [2024-09-15 20:24:14,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:24:14,966 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-09-15 20:24:14,966 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 20:24:14,967 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-09-15 20:24:14,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-15 20:24:14,967 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:24:14,967 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:24:14,967 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-15 20:24:14,967 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-15 20:24:14,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:24:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash 199228017, now seen corresponding path program 2 times [2024-09-15 20:24:14,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:24:14,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084046779] [2024-09-15 20:24:14,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:24:14,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:24:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:24:15,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910463283] [2024-09-15 20:24:15,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:24:15,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:24:15,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:24:15,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:24:15,023 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 20:24:15,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 20:24:15,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:24:15,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-15 20:24:15,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:24:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-15 20:24:15,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:24:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-15 20:24:15,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:24:15,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084046779] [2024-09-15 20:24:15,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:24:15,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910463283] [2024-09-15 20:24:15,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910463283] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:24:15,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:24:15,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2024-09-15 20:24:15,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237771540] [2024-09-15 20:24:15,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 20:24:15,892 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-15 20:24:15,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:24:15,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-15 20:24:15,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:24:15,893 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-15 20:24:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:24:15,952 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-09-15 20:24:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:24:15,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2024-09-15 20:24:15,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:24:15,953 INFO L225 Difference]: With dead ends: 27 [2024-09-15 20:24:15,953 INFO L226 Difference]: Without dead ends: 27 [2024-09-15 20:24:15,953 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:24:15,954 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:24:15,954 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 99 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:24:15,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-15 20:24:15,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-15 20:24:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 20:24:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-15 20:24:15,961 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 29 [2024-09-15 20:24:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:24:15,962 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-15 20:24:15,962 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-15 20:24:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-15 20:24:15,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-15 20:24:15,963 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:24:15,963 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:24:15,982 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 20:24:16,165 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-09-15 20:24:16,166 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-15 20:24:16,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:24:16,166 INFO L85 PathProgramCache]: Analyzing trace with hash -577360965, now seen corresponding path program 1 times [2024-09-15 20:24:16,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:24:16,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903117917] [2024-09-15 20:24:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:24:16,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:24:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:24:16,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913393656] [2024-09-15 20:24:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:24:16,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:24:16,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:24:16,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:24:16,187 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 20:24:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:24:16,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-15 20:24:16,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:24:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-15 20:24:16,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:24:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-15 20:24:16,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:24:16,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903117917] [2024-09-15 20:24:16,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:24:16,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913393656] [2024-09-15 20:24:16,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913393656] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:24:16,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:24:16,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-09-15 20:24:16,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684048145] [2024-09-15 20:24:16,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:24:16,347 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:24:16,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:24:16,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:24:16,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-15 20:24:16,348 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-15 20:24:16,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:24:16,366 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-09-15 20:24:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:24:16,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2024-09-15 20:24:16,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:24:16,366 INFO L225 Difference]: With dead ends: 26 [2024-09-15 20:24:16,366 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:24:16,367 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-15 20:24:16,367 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:24:16,367 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:24:16,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:24:16,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:24:16,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:24:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:24:16,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2024-09-15 20:24:16,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:24:16,368 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:24:16,368 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-15 20:24:16,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:24:16,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:24:16,370 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 7 remaining) [2024-09-15 20:24:16,371 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (5 of 7 remaining) [2024-09-15 20:24:16,371 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (4 of 7 remaining) [2024-09-15 20:24:16,371 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (3 of 7 remaining) [2024-09-15 20:24:16,371 INFO L785 garLoopResultBuilder]: Registering result SAFE for location assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 7 remaining) [2024-09-15 20:24:16,371 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-09-15 20:24:16,371 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 7 remaining) [2024-09-15 20:24:16,387 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-15 20:24:16,575 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:24:16,578 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:24:16,580 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:24:16,582 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-15 20:24:16,582 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-15 20:24:16,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:24:16 BoogieIcfgContainer [2024-09-15 20:24:16,583 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:24:16,583 INFO L158 Benchmark]: Toolchain (without parser) took 5181.78ms. Allocated memory was 88.1MB in the beginning and 144.7MB in the end (delta: 56.6MB). Free memory was 46.7MB in the beginning and 63.2MB in the end (delta: -16.5MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2024-09-15 20:24:16,583 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:24:16,583 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory is still 39.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:24:16,584 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.64ms. Allocated memory is still 88.1MB. Free memory was 46.7MB in the beginning and 68.4MB in the end (delta: -21.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-15 20:24:16,584 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.98ms. Allocated memory is still 88.1MB. Free memory was 68.4MB in the beginning and 66.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:24:16,584 INFO L158 Benchmark]: Boogie Preprocessor took 32.13ms. Allocated memory is still 88.1MB. Free memory was 66.9MB in the beginning and 65.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:24:16,584 INFO L158 Benchmark]: RCFGBuilder took 291.73ms. Allocated memory is still 88.1MB. Free memory was 65.1MB in the beginning and 51.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-15 20:24:16,584 INFO L158 Benchmark]: TraceAbstraction took 4564.93ms. Allocated memory was 88.1MB in the beginning and 144.7MB in the end (delta: 56.6MB). Free memory was 50.4MB in the beginning and 63.2MB in the end (delta: -12.8MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2024-09-15 20:24:16,585 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory is still 39.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.64ms. Allocated memory is still 88.1MB. Free memory was 46.7MB in the beginning and 68.4MB in the end (delta: -21.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.98ms. Allocated memory is still 88.1MB. Free memory was 68.4MB in the beginning and 66.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.13ms. Allocated memory is still 88.1MB. Free memory was 66.9MB in the beginning and 65.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 291.73ms. Allocated memory is still 88.1MB. Free memory was 65.1MB in the beginning and 51.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4564.93ms. Allocated memory was 88.1MB in the beginning and 144.7MB in the end (delta: 56.6MB). Free memory was 50.4MB in the beginning and 63.2MB in the end (delta: -12.8MB). Peak memory consumption was 44.6MB. 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: 28]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 9]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 9]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 9]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 6]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 12]: 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: 9]: 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, 28 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 541 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 346 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 293 IncrementalHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 195 mSDtfsCounter, 293 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 44, 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, 10 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 287 NumberOfCodeBlocks, 287 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 273 ConstructedInterpolants, 0 QuantifiedInterpolants, 1426 SizeOfPredicates, 3 NumberOfNonLiveVariables, 294 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 84/106 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 20:24:16,601 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