This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:16:35,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:16:35,881 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:16:35,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:16:35,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:16:35,904 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:16:35,905 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:16:35,905 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:16:35,906 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:16:35,906 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:16:35,906 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:16:35,906 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:16:35,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:16:35,907 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:16:35,907 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:16:35,908 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:16:35,908 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:16:35,908 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:16:35,908 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:16:35,909 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:16:35,909 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:16:35,913 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:16:35,913 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:16:35,914 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:16:35,914 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:16:35,914 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:16:35,914 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:16:35,914 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:16:35,914 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:16:35,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:16:35,915 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:16:35,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:16:35,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:16:35,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:16:35,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:16:35,916 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:16:35,916 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:16:35,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:16:35,916 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:16:35,916 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:16:35,916 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:16:35,920 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:16:35,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:16:36,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:16:36,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:16:36,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:16:36,188 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:16:36,192 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:16:36,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound50.c [2024-09-15 20:16:37,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:16:37,849 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:16:37,849 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound50.c [2024-09-15 20:16:37,855 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/05e4ce2f0/97a2585ecb064a8a837f808e95fcea40/FLAGc1c9e8796 [2024-09-15 20:16:37,865 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/05e4ce2f0/97a2585ecb064a8a837f808e95fcea40 [2024-09-15 20:16:37,867 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:16:37,869 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:16:37,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/hard-u_valuebound50.yml/witness-2.1.yml [2024-09-15 20:16:37,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:16:37,921 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:16:37,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:16:37,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:16:37,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:16:37,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:16:37" (1/2) ... [2024-09-15 20:16:37,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9306e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:16:37, skipping insertion in model container [2024-09-15 20:16:37,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:16:37" (1/2) ... [2024-09-15 20:16:37,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1035fbd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:16:37, skipping insertion in model container [2024-09-15 20:16:37,935 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 08:16:37" (2/2) ... [2024-09-15 20:16:37,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9306e27 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:16:37, skipping insertion in model container [2024-09-15 20:16:37,935 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 08:16:37" (2/2) ... [2024-09-15 20:16:37,941 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:16:37,941 INFO L1541 ArrayList]: Loop invariant at [L46-L58] ((((((A <= 50) && (r == A)) && (1 <= B)) && (q == 0)) && (B <= 50)) && (d == (((unsigned long long) B * p) % 4294967296))) [2024-09-15 20:16:37,941 INFO L1541 ArrayList]: Loop invariant at [L36-L44] (((((((A <= 50) && (r == A)) && (1 <= B)) && (A <= ((long long) A + r))) && (q == 0)) && (B <= 50)) && (d == (((unsigned long long) B * p) % 4294967296))) [2024-09-15 20:16:37,941 INFO L1541 ArrayList]: Function contract at [L11]: requires null, ensures (\old(cond) != 0) [2024-09-15 20:16:37,941 INFO L1541 ArrayList]: Function contract at [L14]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-15 20:16:37,957 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:16:38,079 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/hard-u_valuebound50.c[537,550] [2024-09-15 20:16:38,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:16:38,117 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-15 20:16:38,145 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/hard-u_valuebound50.c[537,550] Start Parsing Local Start Parsing Local [2024-09-15 20:16:38,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:16:38,174 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:16:38,174 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:16:38 WrapperNode [2024-09-15 20:16:38,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:16:38,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:16:38,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:16:38,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:16:38,181 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 08:16:38" (1/1) ... [2024-09-15 20:16:38,187 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 08:16:38" (1/1) ... [2024-09-15 20:16:38,208 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2024-09-15 20:16:38,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:16:38,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:16:38,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:16:38,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:16:38,219 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 08:16:38" (1/1) ... [2024-09-15 20:16:38,220 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 08:16:38" (1/1) ... [2024-09-15 20:16:38,221 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 08:16:38" (1/1) ... [2024-09-15 20:16:38,226 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 20:16:38,227 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 08:16:38" (1/1) ... [2024-09-15 20:16:38,227 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 08:16:38" (1/1) ... [2024-09-15 20:16:38,230 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 08:16:38" (1/1) ... [2024-09-15 20:16:38,232 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 08:16:38" (1/1) ... [2024-09-15 20:16:38,233 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 08:16:38" (1/1) ... [2024-09-15 20:16:38,238 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 08:16:38" (1/1) ... [2024-09-15 20:16:38,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:16:38,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:16:38,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:16:38,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:16:38,243 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 08:16:38" (1/1) ... [2024-09-15 20:16:38,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:16:38,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:16:38,268 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 20:16:38,274 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 20:16:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:16:38,348 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-15 20:16:38,348 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-15 20:16:38,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-15 20:16:38,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:16:38,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:16:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 20:16:38,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 20:16:38,406 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:16:38,408 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:16:38,587 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-15 20:16:38,612 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-09-15 20:16:38,612 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:16:38,635 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:16:38,635 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-15 20:16:38,636 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:16:38 BoogieIcfgContainer [2024-09-15 20:16:38,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:16:38,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:16:38,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:16:38,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:16:38,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:16:37" (1/4) ... [2024-09-15 20:16:38,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32690bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:16:38, skipping insertion in model container [2024-09-15 20:16:38,643 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 08:16:37" (2/4) ... [2024-09-15 20:16:38,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32690bc0 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:16:38, skipping insertion in model container [2024-09-15 20:16:38,643 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 08:16:38" (3/4) ... [2024-09-15 20:16:38,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32690bc0 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:16:38, skipping insertion in model container [2024-09-15 20:16:38,644 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 08:16:38" (4/4) ... [2024-09-15 20:16:38,645 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound50.c [2024-09-15 20:16:38,658 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:16:38,658 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-09-15 20:16:38,701 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:16:38,708 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;@3e3c53d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:16:38,708 INFO L337 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-09-15 20:16:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 25 states have (on average 1.56) internal successors, (39), 30 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-15 20:16:38,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:16:38,716 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:16:38,717 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:16:38,717 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 9 more)] === [2024-09-15 20:16:38,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:16:38,725 INFO L85 PathProgramCache]: Analyzing trace with hash 134843102, now seen corresponding path program 1 times [2024-09-15 20:16:38,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:16:38,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593723198] [2024-09-15 20:16:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:16:38,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:16:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:16:38,874 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 20:16:38,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:16:38,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593723198] [2024-09-15 20:16:38,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593723198] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:16:38,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:16:38,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:16:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455880715] [2024-09-15 20:16:38,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:16:38,881 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 20:16:38,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:16:38,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 20:16:38,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 20:16:38,912 INFO L87 Difference]: Start difference. First operand has 43 states, 25 states have (on average 1.56) internal successors, (39), 30 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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 20:16:38,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:16:38,946 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2024-09-15 20:16:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 20:16:38,949 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 20:16:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:16:38,957 INFO L225 Difference]: With dead ends: 43 [2024-09-15 20:16:38,958 INFO L226 Difference]: Without dead ends: 41 [2024-09-15 20:16:38,960 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 20:16:38,963 INFO L434 NwaCegarLoop]: 50 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, 50 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 20:16:38,964 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:16:38,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-15 20:16:38,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-15 20:16:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 29 states have internal predecessors, (32), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-15 20:16:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2024-09-15 20:16:39,004 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 5 [2024-09-15 20:16:39,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:16:39,004 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2024-09-15 20:16:39,005 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 20:16:39,005 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2024-09-15 20:16:39,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:16:39,006 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:16:39,006 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:16:39,007 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:16:39,007 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 9 more)] === [2024-09-15 20:16:39,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:16:39,008 INFO L85 PathProgramCache]: Analyzing trace with hash 134843164, now seen corresponding path program 1 times [2024-09-15 20:16:39,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:16:39,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217080489] [2024-09-15 20:16:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:16:39,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:16:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:16:39,111 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 20:16:39,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:16:39,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217080489] [2024-09-15 20:16:39,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217080489] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:16:39,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:16:39,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:16:39,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022383341] [2024-09-15 20:16:39,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:16:39,113 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:16:39,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:16:39,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:16:39,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:16:39,116 INFO L87 Difference]: Start difference. First operand 41 states and 51 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 20:16:39,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:16:39,156 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2024-09-15 20:16:39,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:16:39,156 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 20:16:39,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:16:39,157 INFO L225 Difference]: With dead ends: 40 [2024-09-15 20:16:39,158 INFO L226 Difference]: Without dead ends: 40 [2024-09-15 20:16:39,158 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 20:16:39,159 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:16:39,159 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 121 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:16:39,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-15 20:16:39,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-15 20:16:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 28 states have internal predecessors, (31), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-15 20:16:39,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2024-09-15 20:16:39,168 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 5 [2024-09-15 20:16:39,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:16:39,168 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2024-09-15 20:16:39,169 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 20:16:39,169 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2024-09-15 20:16:39,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-15 20:16:39,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:16:39,170 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:16:39,170 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 20:16:39,171 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:16:39,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:16:39,172 INFO L85 PathProgramCache]: Analyzing trace with hash 363565673, now seen corresponding path program 1 times [2024-09-15 20:16:39,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:16:39,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938477844] [2024-09-15 20:16:39,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:16:39,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:16:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:16:39,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791032844] [2024-09-15 20:16:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:16:39,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:16:39,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:16:39,235 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 20:16:39,239 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 20:16:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:16:39,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-15 20:16:39,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:16:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:16:39,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:16:39,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:16:39,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938477844] [2024-09-15 20:16:39,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:16:39,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791032844] [2024-09-15 20:16:39,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791032844] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:16:39,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:16:39,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-15 20:16:39,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057116151] [2024-09-15 20:16:39,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:16:39,447 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 20:16:39,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:16:39,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 20:16:39,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:16:39,449 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 7 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 20:16:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:16:39,645 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2024-09-15 20:16:39,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 20:16:39,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2024-09-15 20:16:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:16:39,647 INFO L225 Difference]: With dead ends: 51 [2024-09-15 20:16:39,647 INFO L226 Difference]: Without dead ends: 51 [2024-09-15 20:16:39,648 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:16:39,649 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 21 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:16:39,650 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 113 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:16:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-15 20:16:39,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-09-15 20:16:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 20:16:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-09-15 20:16:39,659 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 19 [2024-09-15 20:16:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:16:39,660 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-09-15 20:16:39,660 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 20:16:39,660 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-09-15 20:16:39,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-15 20:16:39,661 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:16:39,661 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:16:39,673 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 20:16:39,865 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 20:16:39,866 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:16:39,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:16:39,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1764960997, now seen corresponding path program 1 times [2024-09-15 20:16:39,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:16:39,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96821207] [2024-09-15 20:16:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:16:39,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:16:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:16:40,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:16:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:16:40,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:16:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:16:40,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:16:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:16:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:16:40,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:16:40,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96821207] [2024-09-15 20:16:40,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96821207] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:16:40,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:16:40,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 20:16:40,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446896862] [2024-09-15 20:16:40,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:16:40,024 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:16:40,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:16:40,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:16:40,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:16:40,029 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 20:16:40,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:16:40,128 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2024-09-15 20:16:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:16:40,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-09-15 20:16:40,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:16:40,129 INFO L225 Difference]: With dead ends: 50 [2024-09-15 20:16:40,129 INFO L226 Difference]: Without dead ends: 50 [2024-09-15 20:16:40,129 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:16:40,130 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 15 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:16:40,130 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 97 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:16:40,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-15 20:16:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-09-15 20:16:40,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 20:16:40,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-09-15 20:16:40,138 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 24 [2024-09-15 20:16:40,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:16:40,139 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-09-15 20:16:40,139 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 20:16:40,139 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-09-15 20:16:40,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-15 20:16:40,139 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:16:40,139 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:16:40,140 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-15 20:16:40,140 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:16:40,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:16:40,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1764960836, now seen corresponding path program 1 times [2024-09-15 20:16:40,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:16:40,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223886163] [2024-09-15 20:16:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:16:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:16:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:16:40,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:16:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:16:40,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:16:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:16:40,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:16:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:16:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:16:40,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:16:40,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223886163] [2024-09-15 20:16:40,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223886163] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:16:40,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:16:40,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:16:40,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212912964] [2024-09-15 20:16:40,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:16:40,177 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:16:40,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:16:40,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:16:40,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:16:40,177 INFO L87 Difference]: Start difference. First operand 48 states and 64 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 20:16:40,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:16:40,206 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2024-09-15 20:16:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:16:40,208 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-09-15 20:16:40,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:16:40,208 INFO L225 Difference]: With dead ends: 47 [2024-09-15 20:16:40,209 INFO L226 Difference]: Without dead ends: 47 [2024-09-15 20:16:40,209 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 20:16:40,211 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:16:40,211 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:16:40,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-15 20:16:40,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-15 20:16:40,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 30 states have internal predecessors, (34), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 20:16:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2024-09-15 20:16:40,218 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 24 [2024-09-15 20:16:40,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:16:40,218 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2024-09-15 20:16:40,219 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 20:16:40,219 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2024-09-15 20:16:40,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-15 20:16:40,219 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:16:40,221 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:16:40,221 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-15 20:16:40,221 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:16:40,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:16:40,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1154352905, now seen corresponding path program 1 times [2024-09-15 20:16:40,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:16:40,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647381244] [2024-09-15 20:16:40,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:16:40,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:16:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:16:40,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303004180] [2024-09-15 20:16:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:16:40,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:16:40,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:16:40,257 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 20:16:40,261 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 20:16:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:16:40,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-15 20:16:40,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:16:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:16:40,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:16:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:16:49,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:16:49,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647381244] [2024-09-15 20:16:49,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:16:49,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303004180] [2024-09-15 20:16:49,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303004180] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:16:49,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:16:49,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-09-15 20:16:49,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485263542] [2024-09-15 20:16:49,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 20:16:49,107 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-15 20:16:49,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:16:49,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-15 20:16:49,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=32, Unknown=2, NotChecked=0, Total=56 [2024-09-15 20:16:49,107 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-15 20:16:53,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-15 20:17:01,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:05,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:09,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:13,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:17,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:21,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:25,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:29,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:33,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:37,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:41,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:45,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:49,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:53,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:57,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:17:59,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:01,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:05,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:07,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:11,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:15,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:19,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:23,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:27,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:31,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:35,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:39,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:43,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:47,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:50,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.59s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:54,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:18:58,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:19:02,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:19:06,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:19:07,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:19:07,046 INFO L93 Difference]: Finished difference Result 62 states and 89 transitions. [2024-09-15 20:19:07,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-15 20:19:07,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 37 [2024-09-15 20:19:07,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:19:07,049 INFO L225 Difference]: With dead ends: 62 [2024-09-15 20:19:07,049 INFO L226 Difference]: Without dead ends: 62 [2024-09-15 20:19:07,049 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=29, Invalid=41, Unknown=2, NotChecked=0, Total=72 [2024-09-15 20:19:07,049 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 39 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 43 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.8s IncrementalHoareTripleChecker+Time [2024-09-15 20:19:07,050 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 91 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 64 Invalid, 31 Unknown, 0 Unchecked, 133.8s Time] [2024-09-15 20:19:07,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-15 20:19:07,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2024-09-15 20:19:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-15 20:19:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2024-09-15 20:19:07,065 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 37 [2024-09-15 20:19:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:19:07,065 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2024-09-15 20:19:07,065 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-15 20:19:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2024-09-15 20:19:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-15 20:19:07,066 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:19:07,066 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:19:07,076 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 20:19:07,267 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-15 20:19:07,267 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:19:07,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:19:07,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1515868503, now seen corresponding path program 1 times [2024-09-15 20:19:07,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:19:07,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927086171] [2024-09-15 20:19:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:19:07,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:19:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:19:07,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283532223] [2024-09-15 20:19:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:19:07,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:19:07,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:19:07,313 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 20:19:07,314 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 20:19:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:19:07,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-15 20:19:07,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:19:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-15 20:19:07,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:19:07,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:19:07,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927086171] [2024-09-15 20:19:07,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:19:07,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283532223] [2024-09-15 20:19:07,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283532223] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:19:07,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:19:07,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2024-09-15 20:19:07,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205987463] [2024-09-15 20:19:07,500 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-15 20:19:07,500 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:19:07,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:19:07,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:19:07,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:19:07,501 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-15 20:19:07,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:19:07,580 INFO L93 Difference]: Finished difference Result 66 states and 93 transitions. [2024-09-15 20:19:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:19:07,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2024-09-15 20:19:07,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:19:07,582 INFO L225 Difference]: With dead ends: 66 [2024-09-15 20:19:07,583 INFO L226 Difference]: Without dead ends: 66 [2024-09-15 20:19:07,583 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:19:07,583 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:19:07,584 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 67 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:19:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-15 20:19:07,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2024-09-15 20:19:07,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 39 states have internal predecessors, (47), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-15 20:19:07,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 91 transitions. [2024-09-15 20:19:07,595 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 91 transitions. Word has length 50 [2024-09-15 20:19:07,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:19:07,596 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 91 transitions. [2024-09-15 20:19:07,596 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-15 20:19:07,596 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 91 transitions. [2024-09-15 20:19:07,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-15 20:19:07,597 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:19:07,597 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:19:07,611 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 20:19:07,797 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-15 20:19:07,798 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:19:07,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:19:07,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2018739730, now seen corresponding path program 1 times [2024-09-15 20:19:07,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:19:07,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197021390] [2024-09-15 20:19:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:19:07,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:19:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:19:08,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:19:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:19:08,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:19:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:19:08,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:19:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:19:08,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 20:19:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:19:08,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-15 20:19:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:19:08,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-15 20:19:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:19:08,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 20:19:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:19:08,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 20:19:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:19:08,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 20:19:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:19:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-15 20:19:08,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:19:08,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197021390] [2024-09-15 20:19:08,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197021390] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:19:08,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:19:08,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 20:19:08,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364773434] [2024-09-15 20:19:08,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:19:08,358 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 20:19:08,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:19:08,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 20:19:08,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:19:08,358 INFO L87 Difference]: Start difference. First operand 63 states and 91 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-15 20:19:09,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:19:09,001 INFO L93 Difference]: Finished difference Result 65 states and 93 transitions. [2024-09-15 20:19:09,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:19:09,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 55 [2024-09-15 20:19:09,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:19:09,005 INFO L225 Difference]: With dead ends: 65 [2024-09-15 20:19:09,005 INFO L226 Difference]: Without dead ends: 58 [2024-09-15 20:19:09,005 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:19:09,005 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-15 20:19:09,005 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 139 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-15 20:19:09,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-15 20:19:09,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-09-15 20:19:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 36 states have internal predecessors, (43), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 20:19:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2024-09-15 20:19:09,011 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 83 transitions. Word has length 55 [2024-09-15 20:19:09,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:19:09,011 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 83 transitions. [2024-09-15 20:19:09,011 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-15 20:19:09,012 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 83 transitions. [2024-09-15 20:19:09,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-15 20:19:09,013 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:19:09,013 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:19:09,013 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-15 20:19:09,013 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:19:09,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:19:09,013 INFO L85 PathProgramCache]: Analyzing trace with hash -550970448, now seen corresponding path program 1 times [2024-09-15 20:19:09,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:19:09,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960772850] [2024-09-15 20:19:09,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:19:09,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:19:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:19:09,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973306158] [2024-09-15 20:19:09,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:19:09,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:19:09,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:19:09,035 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 20:19:09,036 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 20:19:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-15 20:19:09,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-15 20:19:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-15 20:19:09,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-15 20:19:09,163 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-15 20:19:09,164 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 12 remaining) [2024-09-15 20:19:09,169 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 12 remaining) [2024-09-15 20:19:09,169 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (9 of 12 remaining) [2024-09-15 20:19:09,169 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (8 of 12 remaining) [2024-09-15 20:19:09,169 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (7 of 12 remaining) [2024-09-15 20:19:09,169 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (6 of 12 remaining) [2024-09-15 20:19:09,170 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (5 of 12 remaining) [2024-09-15 20:19:09,172 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (4 of 12 remaining) [2024-09-15 20:19:09,172 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION (3 of 12 remaining) [2024-09-15 20:19:09,172 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 12 remaining) [2024-09-15 20:19:09,172 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 12 remaining) [2024-09-15 20:19:09,172 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 12 remaining) [2024-09-15 20:19:09,181 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-15 20:19:09,373 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 20:19:09,375 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:19:09,392 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-09-15 20:19:09,397 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-09-15 20:19:09,399 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-09-15 20:19:09,401 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-09-15 20:19:09,404 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-09-15 20:19:09,409 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:19:09,410 INFO L469 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-09-15 20:19:09,410 INFO L470 ceAbstractionStarter]: WitnessConsidered=2 [2024-09-15 20:19:09,411 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:19:09 BoogieIcfgContainer [2024-09-15 20:19:09,411 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:19:09,411 INFO L158 Benchmark]: Toolchain (without parser) took 151490.83ms. Allocated memory was 77.6MB in the beginning and 130.0MB in the end (delta: 52.4MB). Free memory was 54.0MB in the beginning and 74.6MB in the end (delta: -20.5MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2024-09-15 20:19:09,412 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 77.6MB. Free memory is still 58.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:19:09,412 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 77.6MB. Free memory is still 56.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:19:09,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.03ms. Allocated memory is still 77.6MB. Free memory was 53.8MB in the beginning and 39.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-15 20:19:09,412 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.84ms. Allocated memory is still 77.6MB. Free memory was 39.8MB in the beginning and 38.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:19:09,412 INFO L158 Benchmark]: Boogie Preprocessor took 28.46ms. Allocated memory is still 77.6MB. Free memory was 38.0MB in the beginning and 36.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:19:09,413 INFO L158 Benchmark]: RCFGBuilder took 396.94ms. Allocated memory was 77.6MB in the beginning and 107.0MB in the end (delta: 29.4MB). Free memory was 36.4MB in the beginning and 72.4MB in the end (delta: -35.9MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2024-09-15 20:19:09,413 INFO L158 Benchmark]: TraceAbstraction took 150772.79ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 71.7MB in the beginning and 74.6MB in the end (delta: -2.8MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2024-09-15 20:19:09,414 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 77.6MB. Free memory is still 58.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 77.6MB. Free memory is still 56.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.03ms. Allocated memory is still 77.6MB. Free memory was 53.8MB in the beginning and 39.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.84ms. Allocated memory is still 77.6MB. Free memory was 39.8MB in the beginning and 38.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.46ms. Allocated memory is still 77.6MB. Free memory was 38.0MB in the beginning and 36.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 396.94ms. Allocated memory was 77.6MB in the beginning and 107.0MB in the end (delta: 29.4MB). Free memory was 36.4MB in the beginning and 72.4MB in the end (delta: -35.9MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * TraceAbstraction took 150772.79ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 71.7MB in the beginning and 74.6MB in the end (delta: -2.8MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. * 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 - CounterExampleResult [Line: 46]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L23] unsigned int A, B; [L24] unsigned int r, d, p, q; [L25] A = __VERIFIER_nondet_uint() [L26] CALL assume_abort_if_not(A>=0 && A<=50) VAL [\old(cond)=1] [L12] COND FALSE !(!cond) VAL [\old(cond)=1] [L26] RET assume_abort_if_not(A>=0 && A<=50) VAL [A=1] [L27] B = __VERIFIER_nondet_uint() [L28] CALL assume_abort_if_not(B>=0 && B<=50) VAL [\old(cond)=1] [L12] COND FALSE !(!cond) VAL [\old(cond)=1] [L28] RET assume_abort_if_not(B>=0 && B<=50) VAL [A=1, B=-4294967295] [L29] CALL assume_abort_if_not(B >= 1) VAL [\old(cond)=1] [L12] COND FALSE !(!cond) VAL [\old(cond)=1] [L29] RET assume_abort_if_not(B >= 1) VAL [A=1, B=-4294967295] [L31] r = A [L32] d = B [L33] p = 1 [L34] q = 0 VAL [A=1, B=-4294967295, d=-4294967295, p=1, q=0, r=1] [L36] COND TRUE 1 VAL [A=1, B=-4294967295, d=-4294967295, p=1, q=0, r=1] [L37] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1] [L14] Requires[BinaryExpression[COMPLEQ,IntegerLiteral[1],OldValueExpression[IdentifierExpression[cond]]]] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L37] RET __VERIFIER_assert(q == 0) VAL [A=1, B=-4294967295, d=-4294967295, p=1, q=0, r=1] [L38] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1] [L14] Requires[BinaryExpression[COMPLEQ,IntegerLiteral[1],OldValueExpression[IdentifierExpression[cond]]]] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L38] RET __VERIFIER_assert(r == A) VAL [A=1, B=-4294967295, d=-4294967295, p=1, q=0, r=1] [L39] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1] [L14] Requires[BinaryExpression[COMPLEQ,IntegerLiteral[1],OldValueExpression[IdentifierExpression[cond]]]] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L39] RET __VERIFIER_assert(d == B * p) VAL [A=1, B=-4294967295, d=-4294967295, p=1, q=0, r=1] [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p VAL [A=1, B=-4294967295, d=-8589934590, p=2, q=0, r=1] [L36] COND TRUE 1 VAL [A=1, B=-4294967295, d=-8589934590, p=2, q=0, r=1] [L37] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1] [L14] Requires[BinaryExpression[COMPLEQ,IntegerLiteral[1],OldValueExpression[IdentifierExpression[cond]]]] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L37] RET __VERIFIER_assert(q == 0) VAL [A=1, B=-4294967295, d=-8589934590, p=2, q=0, r=1] [L38] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1] [L14] Requires[BinaryExpression[COMPLEQ,IntegerLiteral[1],OldValueExpression[IdentifierExpression[cond]]]] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L38] RET __VERIFIER_assert(r == A) VAL [A=1, B=-4294967295, d=-8589934590, p=2, q=0, r=1] [L39] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1] [L14] Requires[BinaryExpression[COMPLEQ,IntegerLiteral[1],OldValueExpression[IdentifierExpression[cond]]]] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L39] RET __VERIFIER_assert(d == B * p) VAL [A=1, B=-4294967295, d=-8589934590, p=2, q=0, r=1] [L40] COND TRUE !(r >= d) VAL [A=1, B=-4294967295, d=-8589934590, p=2, q=0, r=1] [L46] COND TRUE 1 VAL [A=1, B=-4294967295, d=-8589934590, p=2, q=0, r=1] [L47] CALL __VERIFIER_assert(A == q*B + r) VAL [\old(cond)=1] [L14] Requires[BinaryExpression[COMPLEQ,IntegerLiteral[1],OldValueExpression[IdentifierExpression[cond]]]] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L47] RET __VERIFIER_assert(A == q*B + r) VAL [A=1, B=-4294967295, d=-8589934590, p=2, q=0, r=1] [L48] CALL __VERIFIER_assert(d == B*p) VAL [\old(cond)=1] [L14] Requires[BinaryExpression[COMPLEQ,IntegerLiteral[1],OldValueExpression[IdentifierExpression[cond]]]] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L48] RET __VERIFIER_assert(d == B*p) VAL [A=1, B=-4294967295, d=-8589934590, p=2, q=0, r=1] [L50] COND FALSE !(!(p != 1)) [L52] d = d / 2 [L53] p = p / 2 VAL [A=1, B=-4294967295, d=1, p=1, q=0, r=1] [L54] COND TRUE r >= d [L55] r = r - d [L56] q = q + p VAL [A=1, B=-4294967295, d=1, p=1, q=1, r=0] - UnprovableResult [Line: 36]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that procedure precondition always holds Unable to prove that procedure precondition always holds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that procedure precondition always holds Unable to prove that procedure precondition always holds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that procedure precondition always holds Unable to prove that procedure precondition always holds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that procedure precondition always holds Unable to prove that procedure precondition always holds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that procedure precondition always holds Unable to prove that procedure precondition always holds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that procedure precondition always holds Unable to prove that procedure precondition always holds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that procedure precondition always holds Unable to prove that procedure precondition always holds Reason: Not analyzed. - UnprovableResult [Line: 11]: Unable to prove that procedure postcondition always holds Unable to prove that procedure postcondition always holds Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that procedure postcondition always holds Unable to prove that procedure postcondition always holds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 43 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 150.7s, OverallIterations: 9, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 139.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 mSolverCounterUnknown, 126 SdHoareTripleChecker+Valid, 134.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 744 SdHoareTripleChecker+Invalid, 134.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 452 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 385 IncrementalHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 292 mSDtfsCounter, 385 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=7, InterpolantAutomatonStates: 37, 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, 8 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 463 NumberOfCodeBlocks, 463 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 247 ConstructedInterpolants, 0 QuantifiedInterpolants, 1371 SizeOfPredicates, 3 NumberOfNonLiveVariables, 292 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 205/210 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 RESULT: Ultimate proved your program to be incorrect! [2024-09-15 20:19:09,504 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...