./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/egcd-ll.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/egcd-ll.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 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/egcd-ll.c ../results/automizer-verification-files/SV-COMP24_unreach-call/egcd-ll.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-dev-1d5fa63-m [2024-09-13 10:14:42,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:14:42,395 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 10:14:42,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:14:42,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:14:42,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:14:42,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:14:42,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:14:42,436 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:14:42,436 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:14:42,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:14:42,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:14:42,437 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:14:42,438 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:14:42,438 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:14:42,440 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:14:42,441 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:14:42,441 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:14:42,441 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:14:42,441 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:14:42,442 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:14:42,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:14:42,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:14:42,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:14:42,446 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:14:42,446 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:14:42,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:14:42,447 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:14:42,447 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:14:42,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:14:42,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:14:42,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:14:42,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:14:42,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:14:42,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:14:42,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:14:42,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:14:42,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:14:42,458 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:14:42,458 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:14:42,458 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:14:42,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:14:42,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:14:42,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:14:42,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:14:42,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:14:42,703 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:14:42,703 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:14:42,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/egcd-ll.yml/witness-2.1.yml [2024-09-13 10:14:42,756 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:14:42,756 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:14:42,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/egcd-ll.c [2024-09-13 10:14:44,186 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:14:44,337 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:14:44,338 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/egcd-ll.c [2024-09-13 10:14:44,345 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/5f77c1c02/b66439b797da4406ad8ab7da8af37aca/FLAG8608ded95 [2024-09-13 10:14:44,741 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/5f77c1c02/b66439b797da4406ad8ab7da8af37aca [2024-09-13 10:14:44,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:14:44,743 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 10:14:44,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:14:44,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:14:44,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:14:44,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:14:42" (1/2) ... [2024-09-13 10:14:44,753 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c00e27f and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:14:44, skipping insertion in model container [2024-09-13 10:14:44,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:14:42" (1/2) ... [2024-09-13 10:14:44,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74d8da8a and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:14:44, skipping insertion in model container [2024-09-13 10:14:44,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:14:44" (2/2) ... [2024-09-13 10:14:44,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c00e27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:44, skipping insertion in model container [2024-09-13 10:14:44,755 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:14:44" (2/2) ... [2024-09-13 10:14:44,762 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:14:44,762 INFO L1541 ArrayList]: Loop invariant at [L33-L50] (((((((__int128) q * x) + a) + ((__int128) y * s)) == ((((__int128) y * r) + b) + ((__int128) p * x))) && (a == (((__int128) y * r) + ((__int128) p * x)))) && (((__int128) p * s) == (((__int128) q * r) + 1))) [2024-09-13 10:14:44,762 INFO L1541 ArrayList]: Function contract at [L10]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 10:14:44,781 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:14:44,928 WARN L247 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/egcd-ll.c[489,502] [2024-09-13 10:14:44,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:14:44,955 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 10:14:45,001 WARN L247 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/egcd-ll.c[489,502] Start Parsing Local [2024-09-13 10:14:45,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:14:45,038 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:14:45,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45 WrapperNode [2024-09-13 10:14:45,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:14:45,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 10:14:45,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 10:14:45,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 10:14:45,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45" (1/1) ... [2024-09-13 10:14:45,057 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45" (1/1) ... [2024-09-13 10:14:45,078 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2024-09-13 10:14:45,079 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 10:14:45,080 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:14:45,081 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:14:45,081 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:14:45,090 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45" (1/1) ... [2024-09-13 10:14:45,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45" (1/1) ... [2024-09-13 10:14:45,092 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45" (1/1) ... [2024-09-13 10:14:45,104 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 10:14:45,104 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45" (1/1) ... [2024-09-13 10:14:45,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45" (1/1) ... [2024-09-13 10:14:45,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45" (1/1) ... [2024-09-13 10:14:45,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45" (1/1) ... [2024-09-13 10:14:45,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45" (1/1) ... [2024-09-13 10:14:45,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45" (1/1) ... [2024-09-13 10:14:45,115 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:14:45,116 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:14:45,116 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:14:45,116 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:14:45,117 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45" (1/1) ... [2024-09-13 10:14:45,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:14:45,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:14:45,145 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) [2024-09-13 10:14:45,147 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 [2024-09-13 10:14:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:14:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 10:14:45,189 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 10:14:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 10:14:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:14:45,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:14:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 10:14:45,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 10:14:45,242 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:14:45,244 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:14:45,400 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 10:14:45,439 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-09-13 10:14:45,439 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:14:45,466 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:14:45,466 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 10:14:45,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:14:45 BoogieIcfgContainer [2024-09-13 10:14:45,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:14:45,469 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 10:14:45,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 10:14:45,473 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 10:14:45,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:14:42" (1/4) ... [2024-09-13 10:14:45,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2776788a and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:14:45, skipping insertion in model container [2024-09-13 10:14:45,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:14:44" (2/4) ... [2024-09-13 10:14:45,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2776788a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:14:45, skipping insertion in model container [2024-09-13 10:14:45,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:14:45" (3/4) ... [2024-09-13 10:14:45,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2776788a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:14:45, skipping insertion in model container [2024-09-13 10:14:45,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:14:45" (4/4) ... [2024-09-13 10:14:45,477 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2024-09-13 10:14:45,497 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 10:14:45,497 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-09-13 10:14:45,536 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 10:14:45,542 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;@6e318467, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 10:14:45,542 INFO L337 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-09-13 10:14:45,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 10:14:45,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-13 10:14:45,552 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:14:45,552 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:14:45,553 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 7 more)] === [2024-09-13 10:14:45,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:14:45,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2087755294, now seen corresponding path program 1 times [2024-09-13 10:14:45,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:14:45,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89363220] [2024-09-13 10:14:45,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:14:45,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:14:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:45,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:14:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:45,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 10:14:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 10:14:45,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:14:45,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89363220] [2024-09-13 10:14:45,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89363220] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:14:45,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:14:45,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:14:45,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915762378] [2024-09-13 10:14:45,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:14:45,730 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 10:14:45,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:14:45,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 10:14:45,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 10:14:45,759 INFO L87 Difference]: Start difference. First operand has 36 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:14:45,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:14:45,792 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-09-13 10:14:45,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 10:14:45,796 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-13 10:14:45,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:14:45,802 INFO L225 Difference]: With dead ends: 36 [2024-09-13 10:14:45,803 INFO L226 Difference]: Without dead ends: 34 [2024-09-13 10:14:45,805 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 10:14:45,809 INFO L434 NwaCegarLoop]: 41 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, 41 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 [2024-09-13 10:14:45,810 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:14:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-13 10:14:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-13 10:14:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 10:14:45,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-09-13 10:14:45,849 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 13 [2024-09-13 10:14:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:14:45,849 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-09-13 10:14:45,849 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:14:45,849 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-09-13 10:14:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-13 10:14:45,853 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:14:45,854 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:14:45,854 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 10:14:45,854 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 7 more)] === [2024-09-13 10:14:45,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:14:45,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1696575326, now seen corresponding path program 1 times [2024-09-13 10:14:45,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:14:45,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911600770] [2024-09-13 10:14:45,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:14:45,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:14:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:14:45,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541969515] [2024-09-13 10:14:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:14:45,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:14:45,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:14:45,922 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) [2024-09-13 10:14:45,923 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 10:14:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:45,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-13 10:14:45,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:14:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 10:14:46,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:14:46,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:14:46,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911600770] [2024-09-13 10:14:46,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:14:46,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541969515] [2024-09-13 10:14:46,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541969515] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:14:46,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:14:46,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:14:46,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481399518] [2024-09-13 10:14:46,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:14:46,076 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:14:46,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:14:46,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:14:46,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:14:46,077 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 10:14:46,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:14:46,132 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2024-09-13 10:14:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:14:46,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-09-13 10:14:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:14:46,134 INFO L225 Difference]: With dead ends: 45 [2024-09-13 10:14:46,134 INFO L226 Difference]: Without dead ends: 45 [2024-09-13 10:14:46,134 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:14:46,136 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:14:46,136 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 59 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:14:46,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-13 10:14:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2024-09-13 10:14:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 1.24) internal successors, (31), 27 states have internal predecessors, (31), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-13 10:14:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-09-13 10:14:46,146 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 13 [2024-09-13 10:14:46,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:14:46,147 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-09-13 10:14:46,147 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 10:14:46,147 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-09-13 10:14:46,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-13 10:14:46,148 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:14:46,148 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:14:46,162 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 10:14:46,350 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:14:46,351 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 7 more)] === [2024-09-13 10:14:46,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:14:46,351 INFO L85 PathProgramCache]: Analyzing trace with hash 964070757, now seen corresponding path program 1 times [2024-09-13 10:14:46,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:14:46,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089471342] [2024-09-13 10:14:46,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:14:46,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:14:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:46,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:14:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:46,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 10:14:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 10:14:46,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:14:46,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089471342] [2024-09-13 10:14:46,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089471342] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:14:46,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:14:46,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:14:46,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140022046] [2024-09-13 10:14:46,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:14:46,464 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:14:46,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:14:46,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:14:46,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:14:46,479 INFO L87 Difference]: Start difference. First operand 44 states and 61 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) [2024-09-13 10:14:46,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:14:46,529 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2024-09-13 10:14:46,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:14:46,530 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 [2024-09-13 10:14:46,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:14:46,531 INFO L225 Difference]: With dead ends: 43 [2024-09-13 10:14:46,531 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 10:14:46,532 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 [2024-09-13 10:14:46,533 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:14:46,533 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 54 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:14:46,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 10:14:46,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-13 10:14:46,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-13 10:14:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 60 transitions. [2024-09-13 10:14:46,543 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 60 transitions. Word has length 18 [2024-09-13 10:14:46,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:14:46,543 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 60 transitions. [2024-09-13 10:14:46,544 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) [2024-09-13 10:14:46,544 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 60 transitions. [2024-09-13 10:14:46,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-13 10:14:46,544 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:14:46,544 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:14:46,545 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 10:14:46,545 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 7 more)] === [2024-09-13 10:14:46,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:14:46,545 INFO L85 PathProgramCache]: Analyzing trace with hash 964070596, now seen corresponding path program 1 times [2024-09-13 10:14:46,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:14:46,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389129173] [2024-09-13 10:14:46,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:14:46,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:14:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:46,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:14:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:46,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 10:14:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 10:14:46,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:14:46,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389129173] [2024-09-13 10:14:46,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389129173] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:14:46,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:14:46,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:14:46,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905311195] [2024-09-13 10:14:46,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:14:46,631 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:14:46,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:14:46,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:14:46,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:14:46,632 INFO L87 Difference]: Start difference. First operand 43 states and 60 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) [2024-09-13 10:14:46,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:14:46,642 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2024-09-13 10:14:46,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:14:46,643 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 [2024-09-13 10:14:46,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:14:46,644 INFO L225 Difference]: With dead ends: 41 [2024-09-13 10:14:46,644 INFO L226 Difference]: Without dead ends: 39 [2024-09-13 10:14:46,645 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 [2024-09-13 10:14:46,646 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 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 [2024-09-13 10:14:46,646 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:14:46,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-13 10:14:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-13 10:14:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-13 10:14:46,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 52 transitions. [2024-09-13 10:14:46,658 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 52 transitions. Word has length 18 [2024-09-13 10:14:46,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:14:46,659 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 52 transitions. [2024-09-13 10:14:46,659 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) [2024-09-13 10:14:46,659 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 52 transitions. [2024-09-13 10:14:46,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-13 10:14:46,660 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:14:46,660 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:14:46,660 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 10:14:46,660 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 7 more)] === [2024-09-13 10:14:46,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:14:46,661 INFO L85 PathProgramCache]: Analyzing trace with hash 678246296, now seen corresponding path program 1 times [2024-09-13 10:14:46,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:14:46,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509856232] [2024-09-13 10:14:46,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:14:46,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:14:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:46,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:14:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:46,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 10:14:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:46,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 10:14:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:46,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-13 10:14:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:46,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-13 10:14:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 10:14:46,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:14:46,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509856232] [2024-09-13 10:14:46,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509856232] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:14:46,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:14:46,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:14:46,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168903282] [2024-09-13 10:14:46,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:14:46,798 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:14:46,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:14:46,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:14:46,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:14:46,799 INFO L87 Difference]: Start difference. First operand 39 states and 52 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 10:14:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:14:46,835 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2024-09-13 10:14:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:14:46,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 31 [2024-09-13 10:14:46,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:14:46,836 INFO L225 Difference]: With dead ends: 38 [2024-09-13 10:14:46,836 INFO L226 Difference]: Without dead ends: 38 [2024-09-13 10:14:46,837 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:14:46,838 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:14:46,838 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 53 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:14:46,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-13 10:14:46,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-09-13 10:14:46,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-13 10:14:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2024-09-13 10:14:46,845 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 31 [2024-09-13 10:14:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:14:46,845 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2024-09-13 10:14:46,845 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 10:14:46,846 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2024-09-13 10:14:46,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 10:14:46,847 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:14:46,847 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:14:46,847 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 10:14:46,847 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 7 more)] === [2024-09-13 10:14:46,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:14:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash -449199561, now seen corresponding path program 1 times [2024-09-13 10:14:46,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:14:46,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805768524] [2024-09-13 10:14:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:14:46,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:14:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:14:46,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096973985] [2024-09-13 10:14:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:14:46,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:14:46,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:14:46,876 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) [2024-09-13 10:14:46,877 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 10:14:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:46,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-13 10:14:46,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:14:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 10:14:47,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:14:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 10:14:47,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:14:47,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805768524] [2024-09-13 10:14:47,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:14:47,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096973985] [2024-09-13 10:14:47,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096973985] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 10:14:47,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:14:47,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-09-13 10:14:47,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323783661] [2024-09-13 10:14:47,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:14:47,911 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 10:14:47,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:14:47,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 10:14:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-09-13 10:14:47,914 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 10:14:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:14:48,363 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2024-09-13 10:14:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:14:48,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-09-13 10:14:48,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:14:48,364 INFO L225 Difference]: With dead ends: 32 [2024-09-13 10:14:48,364 INFO L226 Difference]: Without dead ends: 30 [2024-09-13 10:14:48,365 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-09-13 10:14:48,365 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 10:14:48,366 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 53 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 10:14:48,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-13 10:14:48,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2024-09-13 10:14:48,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2024-09-13 10:14:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-09-13 10:14:48,370 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 32 [2024-09-13 10:14:48,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:14:48,370 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-09-13 10:14:48,370 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 10:14:48,370 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-09-13 10:14:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-13 10:14:48,371 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:14:48,371 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:14:48,388 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 10:14:48,575 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 10:14:48,576 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 7 more)] === [2024-09-13 10:14:48,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:14:48,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1047180818, now seen corresponding path program 1 times [2024-09-13 10:14:48,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:14:48,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283858281] [2024-09-13 10:14:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:14:48,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:14:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:48,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:14:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:48,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 10:14:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:48,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 10:14:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:48,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-13 10:14:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:48,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-13 10:14:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:48,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 10:14:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-13 10:14:48,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:14:48,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283858281] [2024-09-13 10:14:48,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283858281] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:14:48,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:14:48,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:14:48,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695592813] [2024-09-13 10:14:48,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:14:48,786 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 10:14:48,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:14:48,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 10:14:48,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:14:48,787 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-13 10:14:48,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:14:48,835 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2024-09-13 10:14:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:14:48,836 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), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 36 [2024-09-13 10:14:48,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:14:48,836 INFO L225 Difference]: With dead ends: 22 [2024-09-13 10:14:48,837 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 10:14:48,837 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:14:48,837 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:14:48,838 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:14:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 10:14:48,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 10:14:48,838 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) [2024-09-13 10:14:48,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 10:14:48,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2024-09-13 10:14:48,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:14:48,838 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 10:14:48,839 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), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-13 10:14:48,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 10:14:48,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 10:14:48,842 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 10 remaining) [2024-09-13 10:14:48,843 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (8 of 10 remaining) [2024-09-13 10:14:48,844 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (7 of 10 remaining) [2024-09-13 10:14:48,844 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (6 of 10 remaining) [2024-09-13 10:14:48,844 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION (5 of 10 remaining) [2024-09-13 10:14:48,844 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (4 of 10 remaining) [2024-09-13 10:14:48,844 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (3 of 10 remaining) [2024-09-13 10:14:48,845 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (2 of 10 remaining) [2024-09-13 10:14:48,845 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2024-09-13 10:14:48,845 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 10 remaining) [2024-09-13 10:14:48,845 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 10:14:48,848 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:14:48,850 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 10:14:48,853 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-13 10:14:48,853 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-13 10:14:48,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 10:14:48 BoogieIcfgContainer [2024-09-13 10:14:48,854 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 10:14:48,854 INFO L158 Benchmark]: Toolchain (without parser) took 4111.67ms. Allocated memory was 184.5MB in the beginning and 243.3MB in the end (delta: 58.7MB). Free memory was 126.0MB in the beginning and 149.7MB in the end (delta: -23.8MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2024-09-13 10:14:48,855 INFO L158 Benchmark]: Witness Parser took 0.22ms. Allocated memory is still 184.5MB. Free memory was 149.6MB in the beginning and 149.3MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:14:48,855 INFO L158 Benchmark]: CDTParser took 0.87ms. Allocated memory is still 184.5MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:14:48,855 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.37ms. Allocated memory is still 184.5MB. Free memory was 125.6MB in the beginning and 112.1MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 10:14:48,855 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.93ms. Allocated memory is still 184.5MB. Free memory was 112.1MB in the beginning and 110.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:14:48,856 INFO L158 Benchmark]: Boogie Preprocessor took 34.88ms. Allocated memory is still 184.5MB. Free memory was 110.5MB in the beginning and 108.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:14:48,856 INFO L158 Benchmark]: RCFGBuilder took 351.37ms. Allocated memory is still 184.5MB. Free memory was 108.8MB in the beginning and 93.7MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-13 10:14:48,857 INFO L158 Benchmark]: TraceAbstraction took 3384.37ms. Allocated memory was 184.5MB in the beginning and 243.3MB in the end (delta: 58.7MB). Free memory was 92.9MB in the beginning and 149.7MB in the end (delta: -56.9MB). Peak memory consumption was 998.4kB. Max. memory is 16.1GB. [2024-09-13 10:14:48,858 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 0.22ms. Allocated memory is still 184.5MB. Free memory was 149.6MB in the beginning and 149.3MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.87ms. Allocated memory is still 184.5MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.37ms. Allocated memory is still 184.5MB. Free memory was 125.6MB in the beginning and 112.1MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.93ms. Allocated memory is still 184.5MB. Free memory was 112.1MB in the beginning and 110.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.88ms. Allocated memory is still 184.5MB. Free memory was 110.5MB in the beginning and 108.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 351.37ms. Allocated memory is still 184.5MB. Free memory was 108.8MB in the beginning and 93.7MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3384.37ms. Allocated memory was 184.5MB in the beginning and 243.3MB in the end (delta: 58.7MB). Free memory was 92.9MB in the beginning and 149.7MB in the end (delta: -56.9MB). Peak memory consumption was 998.4kB. 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: 33]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 10]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 10]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 10]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 10]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 10]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 10]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 10]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 13]: 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: 10]: 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, 36 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 378 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 161 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 217 mSDtfsCounter, 106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=2, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 SizeOfPredicates, 0 NumberOfNonLiveVariables, 157 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 90/94 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 10:14:48,876 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE