This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:12:34,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:12:34,836 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:12:34,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:12:34,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:12:34,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:12:34,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:12:34,875 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:12:34,875 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:12:34,876 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:12:34,876 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:12:34,876 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:12:34,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:12:34,877 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:12:34,878 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:12:34,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:12:34,878 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:12:34,879 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:12:34,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:12:34,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:12:34,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:12:34,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:12:34,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:12:34,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:12:34,884 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:12:34,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:12:34,885 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:12:34,885 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:12:34,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:12:34,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:12:34,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:12:34,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:12:34,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:12:34,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:12:34,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:12:34,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:12:34,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:12:34,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:12:34,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:12:34,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:12:34,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:12:34,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:12:34,889 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:12:35,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:12:35,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:12:35,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:12:35,219 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:12:35,219 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:12:35,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.c [2024-09-15 20:12:36,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:12:37,072 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:12:37,072 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.c [2024-09-15 20:12:37,082 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e4f9620f7/cba3942646384fb0a0c16e6f94a3f14a/FLAGb90095912 [2024-09-15 20:12:37,095 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e4f9620f7/cba3942646384fb0a0c16e6f94a3f14a [2024-09-15 20:12:37,098 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:12:37,099 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:12:37,100 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/bresenham-ll_valuebound50.yml/witness-2.1.yml [2024-09-15 20:12:37,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:12:37,175 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:12:37,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:12:37,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:12:37,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:12:37,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:12:37" (1/2) ... [2024-09-15 20:12:37,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@616e0e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:12:37, skipping insertion in model container [2024-09-15 20:12:37,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:12:37" (1/2) ... [2024-09-15 20:12:37,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7eaa28f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:12:37, skipping insertion in model container [2024-09-15 20:12:37,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:12:37" (2/2) ... [2024-09-15 20:12:37,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@616e0e42 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37, skipping insertion in model container [2024-09-15 20:12:37,190 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:12:37" (2/2) ... [2024-09-15 20:12:37,198 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:12:37,199 INFO L1541 ArrayList]: Loop invariant at [L32-L47] (((((((((__int128) y * x) == (((__int128) X * y) + y)) && ((((long long) Y * 2) + (2 * ((__int128) Y * x))) == (((((__int128) X * y) * 2) + X) + v))) && (Y <= 50)) && (0 <= Y)) && (0 <= X)) && (X <= 50)) || ((((((((long long) Y * 2) + (2 * ((__int128) Y * x))) == (((((__int128) X * y) * 2) + X) + v)) && (Y <= 50)) && (0 <= Y)) && (0 <= X)) && (X <= 50))) [2024-09-15 20:12:37,199 INFO L1541 ArrayList]: Function contract at [L10]: requires null, ensures (\old(cond) != 0) [2024-09-15 20:12:37,199 INFO L1541 ArrayList]: Function contract at [L13]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-15 20:12:37,222 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:12:37,387 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.c[597,610] [2024-09-15 20:12:37,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:12:37,435 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-15 20:12:37,476 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.c[597,610] Start Parsing Local [2024-09-15 20:12:37,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:12:37,515 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:12:37,515 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37 WrapperNode [2024-09-15 20:12:37,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:12:37,517 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:12:37,517 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:12:37,517 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:12:37,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37" (1/1) ... [2024-09-15 20:12:37,533 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37" (1/1) ... [2024-09-15 20:12:37,560 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2024-09-15 20:12:37,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:12:37,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:12:37,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:12:37,562 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:12:37,571 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37" (1/1) ... [2024-09-15 20:12:37,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37" (1/1) ... [2024-09-15 20:12:37,574 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37" (1/1) ... [2024-09-15 20:12:37,581 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure assume_abort_if_not is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-15 20:12:37,582 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37" (1/1) ... [2024-09-15 20:12:37,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37" (1/1) ... [2024-09-15 20:12:37,589 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37" (1/1) ... [2024-09-15 20:12:37,592 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37" (1/1) ... [2024-09-15 20:12:37,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37" (1/1) ... [2024-09-15 20:12:37,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37" (1/1) ... [2024-09-15 20:12:37,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:12:37,600 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:12:37,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:12:37,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:12:37,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37" (1/1) ... [2024-09-15 20:12:37,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:12:37,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:12:37,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 20:12:37,648 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 20:12:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:12:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-15 20:12:37,694 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-15 20:12:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-15 20:12:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:12:37,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:12:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 20:12:37,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 20:12:37,766 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:12:37,769 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:12:37,937 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-15 20:12:37,966 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-09-15 20:12:37,966 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:12:37,999 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:12:38,001 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-15 20:12:38,003 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:12:38 BoogieIcfgContainer [2024-09-15 20:12:38,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:12:38,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:12:38,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:12:38,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:12:38,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:12:37" (1/4) ... [2024-09-15 20:12:38,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a59a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:12:38, skipping insertion in model container [2024-09-15 20:12:38,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:12:37" (2/4) ... [2024-09-15 20:12:38,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a59a83 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:12:38, skipping insertion in model container [2024-09-15 20:12:38,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:12:37" (3/4) ... [2024-09-15 20:12:38,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a59a83 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:12:38, skipping insertion in model container [2024-09-15 20:12:38,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:12:38" (4/4) ... [2024-09-15 20:12:38,014 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound50.c [2024-09-15 20:12:38,034 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:12:38,034 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-09-15 20:12:38,090 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:12:38,100 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;@7d5e1fd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:12:38,100 INFO L337 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-09-15 20:12:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 23 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 20:12:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:12:38,114 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:38,115 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:12:38,116 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-15 20:12:38,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:38,124 INFO L85 PathProgramCache]: Analyzing trace with hash 97994615, now seen corresponding path program 1 times [2024-09-15 20:12:38,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:38,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829182302] [2024-09-15 20:12:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:38,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:12:38,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:38,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829182302] [2024-09-15 20:12:38,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829182302] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:12:38,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:12:38,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:12:38,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956809787] [2024-09-15 20:12:38,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:38,305 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 20:12:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:38,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 20:12:38,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 20:12:38,339 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 23 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:38,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:38,372 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-09-15 20:12:38,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 20:12:38,375 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-15 20:12:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:38,381 INFO L225 Difference]: With dead ends: 30 [2024-09-15 20:12:38,382 INFO L226 Difference]: Without dead ends: 28 [2024-09-15 20:12:38,384 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 20:12:38,389 INFO L434 NwaCegarLoop]: 30 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, 30 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:38,390 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:12:38,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-15 20:12:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-15 20:12:38,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 20:12:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-09-15 20:12:38,439 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 5 [2024-09-15 20:12:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:38,439 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-09-15 20:12:38,439 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-09-15 20:12:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:12:38,441 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:38,442 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:12:38,442 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:12:38,442 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-15 20:12:38,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:38,444 INFO L85 PathProgramCache]: Analyzing trace with hash 97994677, now seen corresponding path program 1 times [2024-09-15 20:12:38,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:38,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490550606] [2024-09-15 20:12:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:38,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:12:38,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:38,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490550606] [2024-09-15 20:12:38,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490550606] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:12:38,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:12:38,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:12:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870682910] [2024-09-15 20:12:38,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:38,564 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:12:38,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:38,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:12:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:12:38,569 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:38,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:38,621 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-09-15 20:12:38,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:12:38,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-15 20:12:38,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:38,623 INFO L225 Difference]: With dead ends: 27 [2024-09-15 20:12:38,623 INFO L226 Difference]: Without dead ends: 27 [2024-09-15 20:12:38,623 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:12:38,624 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:38,624 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:12:38,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-15 20:12:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-15 20:12:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 21 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 20:12:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-09-15 20:12:38,633 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 5 [2024-09-15 20:12:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:38,633 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-09-15 20:12:38,633 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-09-15 20:12:38,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-15 20:12:38,634 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:38,634 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:38,635 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 20:12:38,635 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-15 20:12:38,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:38,637 INFO L85 PathProgramCache]: Analyzing trace with hash -257595004, now seen corresponding path program 1 times [2024-09-15 20:12:38,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:38,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981448799] [2024-09-15 20:12:38,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:38,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:12:38,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187040837] [2024-09-15 20:12:38,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:38,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:38,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:12:38,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:12:38,683 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 20:12:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:38,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-15 20:12:38,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:12:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-15 20:12:38,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:12:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-15 20:12:39,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:39,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981448799] [2024-09-15 20:12:39,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:12:39,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187040837] [2024-09-15 20:12:39,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187040837] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:12:39,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:12:39,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-09-15 20:12:39,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427070989] [2024-09-15 20:12:39,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 20:12:39,282 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-15 20:12:39,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:39,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-15 20:12:39,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:12:39,284 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 20:12:39,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:39,447 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2024-09-15 20:12:39,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-15 20:12:39,448 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-09-15 20:12:39,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:39,450 INFO L225 Difference]: With dead ends: 32 [2024-09-15 20:12:39,451 INFO L226 Difference]: Without dead ends: 32 [2024-09-15 20:12:39,451 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:12:39,452 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:39,453 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 73 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:12:39,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-15 20:12:39,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-09-15 20:12:39,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 20:12:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-09-15 20:12:39,460 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 14 [2024-09-15 20:12:39,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:39,462 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-09-15 20:12:39,462 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 20:12:39,462 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-09-15 20:12:39,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-15 20:12:39,463 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:39,463 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:39,476 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-15 20:12:39,664 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:39,664 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-15 20:12:39,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1559305831, now seen corresponding path program 1 times [2024-09-15 20:12:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:39,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729371896] [2024-09-15 20:12:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:39,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:39,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:12:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:39,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:12:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 20:12:39,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:39,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729371896] [2024-09-15 20:12:39,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729371896] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:12:39,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:12:39,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:12:39,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852679952] [2024-09-15 20:12:39,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:39,897 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:12:39,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:39,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:12:39,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:12:39,898 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-09-15 20:12:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:39,990 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2024-09-15 20:12:39,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:12:39,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 16 [2024-09-15 20:12:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:39,993 INFO L225 Difference]: With dead ends: 30 [2024-09-15 20:12:39,993 INFO L226 Difference]: Without dead ends: 30 [2024-09-15 20:12:39,993 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:12:39,994 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:39,995 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 49 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:12:39,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-15 20:12:40,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-15 20:12:40,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 20:12:40,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-09-15 20:12:40,004 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 16 [2024-09-15 20:12:40,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:40,004 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-09-15 20:12:40,004 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-09-15 20:12:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-09-15 20:12:40,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-15 20:12:40,006 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:40,006 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:40,006 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-15 20:12:40,007 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-15 20:12:40,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:40,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1084728619, now seen corresponding path program 1 times [2024-09-15 20:12:40,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:40,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725177727] [2024-09-15 20:12:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:40,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:40,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:12:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:40,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:12:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:40,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 20:12:40,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:40,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725177727] [2024-09-15 20:12:40,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725177727] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:12:40,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:12:40,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:12:40,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335282474] [2024-09-15 20:12:40,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:40,095 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:12:40,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:40,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:12:40,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:12:40,096 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:12:40,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:40,104 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2024-09-15 20:12:40,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:12:40,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (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 19 [2024-09-15 20:12:40,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:40,106 INFO L225 Difference]: With dead ends: 28 [2024-09-15 20:12:40,106 INFO L226 Difference]: Without dead ends: 28 [2024-09-15 20:12:40,106 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:12:40,107 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:40,107 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:12:40,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-15 20:12:40,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-15 20:12:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 20:12:40,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-09-15 20:12:40,111 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2024-09-15 20:12:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:40,112 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-09-15 20:12:40,112 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:12:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-09-15 20:12:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-15 20:12:40,113 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:40,113 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:40,113 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-15 20:12:40,113 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-15 20:12:40,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1084728458, now seen corresponding path program 1 times [2024-09-15 20:12:40,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:40,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259176987] [2024-09-15 20:12:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:40,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:40,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:12:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:40,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:12:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 20:12:40,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:40,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259176987] [2024-09-15 20:12:40,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259176987] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:12:40,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:12:40,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:12:40,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074594594] [2024-09-15 20:12:40,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:40,178 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:12:40,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:40,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:12:40,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:12:40,179 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:12:40,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:40,194 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-09-15 20:12:40,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:12:40,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (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 19 [2024-09-15 20:12:40,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:40,196 INFO L225 Difference]: With dead ends: 27 [2024-09-15 20:12:40,196 INFO L226 Difference]: Without dead ends: 27 [2024-09-15 20:12:40,197 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:12:40,198 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:40,198 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:12:40,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-15 20:12:40,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-15 20:12:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 20:12:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-09-15 20:12:40,203 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2024-09-15 20:12:40,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:40,203 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-09-15 20:12:40,204 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:12:40,204 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-09-15 20:12:40,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-15 20:12:40,205 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:40,205 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:40,205 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-15 20:12:40,205 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-15 20:12:40,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:40,206 INFO L85 PathProgramCache]: Analyzing trace with hash 740765052, now seen corresponding path program 1 times [2024-09-15 20:12:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:40,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109596428] [2024-09-15 20:12:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:40,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:12:40,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877956935] [2024-09-15 20:12:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:40,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:40,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:12:40,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:12:40,263 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 20:12:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:40,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-15 20:12:40,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:12:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 20:12:40,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:12:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 20:12:40,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:40,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109596428] [2024-09-15 20:12:40,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:12:40,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877956935] [2024-09-15 20:12:40,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877956935] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:12:40,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:12:40,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-15 20:12:40,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110084527] [2024-09-15 20:12:40,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:40,831 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:12:40,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:40,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:12:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:12:40,832 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-15 20:12:40,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:40,911 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-09-15 20:12:40,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:12:40,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-09-15 20:12:40,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:40,913 INFO L225 Difference]: With dead ends: 26 [2024-09-15 20:12:40,913 INFO L226 Difference]: Without dead ends: 26 [2024-09-15 20:12:40,914 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:12:40,914 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:40,916 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 45 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:12:40,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-15 20:12:40,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-15 20:12:40,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 20:12:40,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-15 20:12:40,922 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 24 [2024-09-15 20:12:40,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:40,923 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-15 20:12:40,923 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-15 20:12:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-15 20:12:40,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-15 20:12:40,923 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:40,924 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:40,941 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-15 20:12:41,124 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-15 20:12:41,125 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-15 20:12:41,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:41,125 INFO L85 PathProgramCache]: Analyzing trace with hash 439517328, now seen corresponding path program 1 times [2024-09-15 20:12:41,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:41,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501940939] [2024-09-15 20:12:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:41,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:41,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:12:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:41,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:12:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:41,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:12:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:41,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-15 20:12:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-15 20:12:41,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:41,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501940939] [2024-09-15 20:12:41,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501940939] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:12:41,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238818150] [2024-09-15 20:12:41,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:41,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:41,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:12:41,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:12:41,279 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 20:12:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:41,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-15 20:12:41,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:12:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-15 20:12:41,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:12:41,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238818150] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:12:41,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:12:41,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-09-15 20:12:41,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131812056] [2024-09-15 20:12:41,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:41,458 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 20:12:41,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:41,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 20:12:41,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-15 20:12:41,459 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 7 states, 5 states have (on average 4.2) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-15 20:12:41,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:41,584 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2024-09-15 20:12:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-15 20:12:41,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-09-15 20:12:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:41,585 INFO L225 Difference]: With dead ends: 35 [2024-09-15 20:12:41,585 INFO L226 Difference]: Without dead ends: 33 [2024-09-15 20:12:41,585 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-09-15 20:12:41,586 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:41,586 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 36 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:12:41,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-15 20:12:41,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2024-09-15 20:12:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 20:12:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-09-15 20:12:41,590 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2024-09-15 20:12:41,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:41,590 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-09-15 20:12:41,590 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-15 20:12:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-09-15 20:12:41,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-15 20:12:41,591 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:41,591 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:41,609 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-15 20:12:41,795 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-15 20:12:41,796 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-15 20:12:41,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:41,796 INFO L85 PathProgramCache]: Analyzing trace with hash 697682766, now seen corresponding path program 1 times [2024-09-15 20:12:41,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:41,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982426335] [2024-09-15 20:12:41,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:41,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:12:41,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128218847] [2024-09-15 20:12:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:41,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:41,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:12:41,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:12:41,823 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 20:12:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:41,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-15 20:12:41,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:12:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-15 20:12:42,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:12:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-15 20:12:42,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:42,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982426335] [2024-09-15 20:12:42,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:12:42,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128218847] [2024-09-15 20:12:42,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128218847] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:12:42,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:12:42,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-09-15 20:12:42,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182216809] [2024-09-15 20:12:42,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:42,700 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-15 20:12:42,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:42,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-15 20:12:42,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-09-15 20:12:42,701 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 20:12:43,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:43,441 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2024-09-15 20:12:43,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-15 20:12:43,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2024-09-15 20:12:43,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:43,442 INFO L225 Difference]: With dead ends: 32 [2024-09-15 20:12:43,443 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:12:43,443 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-09-15 20:12:43,444 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:43,444 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 65 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:12:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:12:43,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:12:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:12:43,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2024-09-15 20:12:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:43,445 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:12:43,446 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 20:12:43,447 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:12:43,447 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:12:43,449 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-09-15 20:12:43,450 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (4 of 6 remaining) [2024-09-15 20:12:43,450 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (3 of 6 remaining) [2024-09-15 20:12:43,450 INFO L785 garLoopResultBuilder]: Registering result SAFE for location assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 6 remaining) [2024-09-15 20:12:43,451 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-09-15 20:12:43,451 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 6 remaining) [2024-09-15 20:12:43,469 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-15 20:12:43,655 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:43,658 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:43,660 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:12:43,663 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-15 20:12:43,663 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-15 20:12:43,664 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:12:43 BoogieIcfgContainer [2024-09-15 20:12:43,664 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:12:43,664 INFO L158 Benchmark]: Toolchain (without parser) took 6489.74ms. Allocated memory was 65.0MB in the beginning and 125.8MB in the end (delta: 60.8MB). Free memory was 45.3MB in the beginning and 95.9MB in the end (delta: -50.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2024-09-15 20:12:43,665 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 44.0MB. Free memory is still 21.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:12:43,665 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 65.0MB. Free memory is still 29.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:12:43,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.59ms. Allocated memory is still 65.0MB. Free memory was 45.1MB in the beginning and 31.3MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-15 20:12:43,666 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.84ms. Allocated memory is still 65.0MB. Free memory was 31.3MB in the beginning and 29.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:12:43,666 INFO L158 Benchmark]: Boogie Preprocessor took 37.48ms. Allocated memory is still 65.0MB. Free memory was 29.7MB in the beginning and 28.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:12:43,667 INFO L158 Benchmark]: RCFGBuilder took 403.24ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 28.1MB in the beginning and 52.9MB in the end (delta: -24.9MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2024-09-15 20:12:43,667 INFO L158 Benchmark]: TraceAbstraction took 5658.75ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 52.5MB in the beginning and 95.9MB in the end (delta: -43.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:12:43,669 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 44.0MB. Free memory is still 21.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 65.0MB. Free memory is still 29.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.59ms. Allocated memory is still 65.0MB. Free memory was 45.1MB in the beginning and 31.3MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.84ms. Allocated memory is still 65.0MB. Free memory was 31.3MB in the beginning and 29.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.48ms. Allocated memory is still 65.0MB. Free memory was 29.7MB in the beginning and 28.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 403.24ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 28.1MB in the beginning and 52.9MB in the end (delta: -24.9MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5658.75ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 52.5MB in the beginning and 95.9MB in the end (delta: -43.4MB). There was no memory consumed. 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: 32]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 13]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 13]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 10]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 16]: 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: 13]: 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, 30 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 453 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 280 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 309 IncrementalHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 173 mSDtfsCounter, 309 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=3, InterpolantAutomatonStates: 45, 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, 9 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 272 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 259 ConstructedInterpolants, 1 QuantifiedInterpolants, 1278 SizeOfPredicates, 8 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 65/78 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 20:12:43,692 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...