This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 06:21:33,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 06:21:33,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 06:21:33,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 06:21:33,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 06:21:33,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 06:21:33,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 06:21:33,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 06:21:33,393 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 06:21:33,393 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 06:21:33,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 06:21:33,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 06:21:33,395 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 06:21:33,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 06:21:33,395 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 06:21:33,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 06:21:33,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 06:21:33,396 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 06:21:33,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 06:21:33,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 06:21:33,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 06:21:33,400 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 06:21:33,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 06:21:33,400 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 06:21:33,400 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 06:21:33,401 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 06:21:33,401 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 06:21:33,401 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 06:21:33,401 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 06:21:33,402 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 06:21:33,402 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 06:21:33,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 06:21:33,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:21:33,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 06:21:33,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 06:21:33,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 06:21:33,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 06:21:33,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 06:21:33,404 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 06:21:33,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 06:21:33,405 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 06:21:33,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 06:21:33,405 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 06:21:33,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 06:21:33,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 06:21:33,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 06:21:33,646 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 06:21:33,646 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 06:21:33,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c [2024-09-13 06:21:34,965 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 06:21:35,127 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 06:21:35,127 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c [2024-09-13 06:21:35,133 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0cf886509/6a056651a1704267a7141361383912ef/FLAGec49125df [2024-09-13 06:21:35,533 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0cf886509/6a056651a1704267a7141361383912ef [2024-09-13 06:21:35,535 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 06:21:35,536 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 06:21:35,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/prodbin-ll_valuebound10.yml/witness-2.1.yml [2024-09-13 06:21:35,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 06:21:35,580 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 06:21:35,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 06:21:35,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 06:21:35,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 06:21:35,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:21:35" (1/2) ... [2024-09-13 06:21:35,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f216f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:21:35, skipping insertion in model container [2024-09-13 06:21:35,588 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:21:35" (1/2) ... [2024-09-13 06:21:35,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7463d62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:21:35, skipping insertion in model container [2024-09-13 06:21:35,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:21:35" (2/2) ... [2024-09-13 06:21:35,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f216f1e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:21:35, skipping insertion in model container [2024-09-13 06:21:35,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:21:35" (2/2) ... [2024-09-13 06:21:35,596 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 06:21:35,597 INFO L1541 ArrayList]: Loop invariant at [L34-L45] ((((((((((((((z == 0) && (y == (b / 2))) && (((long long) a * 2) == x)) && (0 <= a)) && ((b % 2) != 1)) && (1 <= y)) && (a <= 10)) && (y <= 5)) || ((((((((1 <= (b % 2)) && ((z + ((__int128) y * x)) == ((long long) b * a))) && (((long long) a * 2) == x)) && (0 <= a)) && (1 <= b)) && (b <= 10)) && (a <= 10)) && (((-1 + b) / 2) == y))) || ((((((((z == 0) && (((__int128) y * x) == ((long long) b * a))) && (y <= 2)) && (0 <= a)) && (1 <= b)) && (1 <= y)) && (b <= 10)) && (a <= 10))) || (((((((z == 0) && (b == y)) && (0 <= a)) && (1 <= y)) && (b <= 10)) && (a == x)) && (a <= 10))) || (((((((0 <= y) && ((z + ((__int128) y * x)) == ((long long) b * a))) && (0 <= a)) && (1 <= b)) && (b <= 10)) && (a <= 10)) && (y <= 1))) || ((((((((0 <= y) && ((z + ((__int128) y * x)) == ((long long) b * a))) && (y <= 2)) && (0 <= a)) && (x == ((__int128) z * 2))) && (1 <= b)) && (b <= 10)) && (a <= 10))) || (((((((((a == z) && (1 <= (b % 2))) && (((long long) a * 4) == x)) && (0 <= a)) && (0 <= b)) && ((((-1 + b) / 2) % 2) != 1)) && (((-1 + b) / 4) == y)) && (b <= 10)) && (a <= 10))) [2024-09-13 06:21:35,597 INFO L1541 ArrayList]: Function contract at [L9]: requires null, ensures (\old(cond) != 0) [2024-09-13 06:21:35,597 INFO L1541 ArrayList]: Function contract at [L12]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 06:21:35,614 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 06:21:35,773 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c[537,550] [2024-09-13 06:21:35,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:21:35,799 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-13 06:21:35,852 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c[537,550] Start Parsing Local [2024-09-13 06:21:35,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:21:35,897 INFO L204 MainTranslator]: Completed translation [2024-09-13 06:21:35,898 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:21:35 WrapperNode [2024-09-13 06:21:35,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 06:21:35,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 06:21:35,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 06:21:35,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 06:21:35,904 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 13.09 06:21:35" (1/1) ... [2024-09-13 06:21:35,914 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 13.09 06:21:35" (1/1) ... [2024-09-13 06:21:35,943 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2024-09-13 06:21:35,944 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 06:21:35,945 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 06:21:35,945 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 06:21:35,945 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 06:21:35,955 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 13.09 06:21:35" (1/1) ... [2024-09-13 06:21:35,956 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 13.09 06:21:35" (1/1) ... [2024-09-13 06:21:35,959 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 13.09 06:21:35" (1/1) ... [2024-09-13 06:21:35,967 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 [2024-09-13 06:21:35,968 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 13.09 06:21:35" (1/1) ... [2024-09-13 06:21:35,968 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 13.09 06:21:35" (1/1) ... [2024-09-13 06:21:35,977 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 13.09 06:21:35" (1/1) ... [2024-09-13 06:21:35,980 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 13.09 06:21:35" (1/1) ... [2024-09-13 06:21:35,981 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 13.09 06:21:35" (1/1) ... [2024-09-13 06:21:35,982 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 13.09 06:21:35" (1/1) ... [2024-09-13 06:21:35,985 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 06:21:35,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 06:21:35,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 06:21:35,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 06:21:35,990 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 13.09 06:21:35" (1/1) ... [2024-09-13 06:21:35,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:21:36,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:21:36,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 06:21:36,039 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 06:21:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 06:21:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 06:21:36,083 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 06:21:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 06:21:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 06:21:36,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 06:21:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 06:21:36,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 06:21:36,138 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 06:21:36,140 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 06:21:36,289 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 06:21:36,309 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-09-13 06:21:36,310 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 06:21:36,333 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 06:21:36,333 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 06:21:36,333 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:21:36 BoogieIcfgContainer [2024-09-13 06:21:36,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 06:21:36,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 06:21:36,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 06:21:36,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 06:21:36,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 06:21:35" (1/4) ... [2024-09-13 06:21:36,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b701e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:21:36, skipping insertion in model container [2024-09-13 06:21:36,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:21:35" (2/4) ... [2024-09-13 06:21:36,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b701e1 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:21:36, skipping insertion in model container [2024-09-13 06:21:36,341 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 13.09 06:21:35" (3/4) ... [2024-09-13 06:21:36,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b701e1 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:21:36, skipping insertion in model container [2024-09-13 06:21:36,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:21:36" (4/4) ... [2024-09-13 06:21:36,343 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound10.c [2024-09-13 06:21:36,358 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 06:21:36,358 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-09-13 06:21:36,399 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 06:21:36,405 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;@48eda3f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 06:21:36,405 INFO L337 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-09-13 06:21:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 22 states have internal predecessors, (28), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 06:21:36,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 06:21:36,414 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:21:36,415 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 06:21:36,416 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:21:36,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:21:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash 99841657, now seen corresponding path program 1 times [2024-09-13 06:21:36,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:21:36,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261615566] [2024-09-13 06:21:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:36,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:21:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:21:36,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:21:36,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261615566] [2024-09-13 06:21:36,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261615566] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:21:36,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:21:36,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 06:21:36,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54335917] [2024-09-13 06:21:36,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:21:36,585 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 06:21:36,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:21:36,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 06:21:36,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 06:21:36,614 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 22 states have internal predecessors, (28), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:21:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:21:36,635 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2024-09-13 06:21:36,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 06:21:36,642 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 [2024-09-13 06:21:36,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:21:36,647 INFO L225 Difference]: With dead ends: 30 [2024-09-13 06:21:36,648 INFO L226 Difference]: Without dead ends: 28 [2024-09-13 06:21:36,649 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 [2024-09-13 06:21:36,653 INFO L434 NwaCegarLoop]: 31 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, 31 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:21:36,654 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:21:36,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-13 06:21:36,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-13 06:21:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:21:36,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-09-13 06:21:36,698 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 5 [2024-09-13 06:21:36,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:21:36,698 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-09-13 06:21:36,698 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) [2024-09-13 06:21:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-09-13 06:21:36,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 06:21:36,700 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:21:36,700 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 06:21:36,700 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 06:21:36,701 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:21:36,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:21:36,704 INFO L85 PathProgramCache]: Analyzing trace with hash 99841719, now seen corresponding path program 1 times [2024-09-13 06:21:36,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:21:36,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974858872] [2024-09-13 06:21:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:36,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:21:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:21:36,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:21:36,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974858872] [2024-09-13 06:21:36,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974858872] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:21:36,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:21:36,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 06:21:36,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988154601] [2024-09-13 06:21:36,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:21:36,809 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 06:21:36,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:21:36,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 06:21:36,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 06:21:36,810 INFO L87 Difference]: Start difference. First operand 28 states and 32 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) [2024-09-13 06:21:36,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:21:36,864 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-09-13 06:21:36,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 06:21:36,864 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 [2024-09-13 06:21:36,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:21:36,865 INFO L225 Difference]: With dead ends: 27 [2024-09-13 06:21:36,865 INFO L226 Difference]: Without dead ends: 27 [2024-09-13 06:21:36,865 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 [2024-09-13 06:21:36,866 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 64 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 [2024-09-13 06:21:36,866 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 64 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:21:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-13 06:21:36,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-13 06:21:36,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:21:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-13 06:21:36,873 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 5 [2024-09-13 06:21:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:21:36,873 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-13 06:21:36,873 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) [2024-09-13 06:21:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-13 06:21:36,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-13 06:21:36,874 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:21:36,875 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:21:36,875 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 06:21:36,875 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:21:36,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:21:36,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1683842591, now seen corresponding path program 1 times [2024-09-13 06:21:36,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:21:36,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312018843] [2024-09-13 06:21:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:36,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:21:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:37,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:21:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:37,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 06:21:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:37,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 06:21:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 06:21:37,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:21:37,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312018843] [2024-09-13 06:21:37,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312018843] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:21:37,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:21:37,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-13 06:21:37,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743649207] [2024-09-13 06:21:37,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:21:37,472 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-13 06:21:37,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:21:37,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-13 06:21:37,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-09-13 06:21:37,476 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 9 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2024-09-13 06:21:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:21:37,610 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-09-13 06:21:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 06:21:37,610 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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 [2024-09-13 06:21:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:21:37,611 INFO L225 Difference]: With dead ends: 33 [2024-09-13 06:21:37,611 INFO L226 Difference]: Without dead ends: 33 [2024-09-13 06:21:37,611 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-09-13 06:21:37,612 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:21:37,612 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 74 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:21:37,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-13 06:21:37,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-09-13 06:21:37,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 06:21:37,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-09-13 06:21:37,623 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 19 [2024-09-13 06:21:37,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:21:37,625 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-09-13 06:21:37,625 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2024-09-13 06:21:37,625 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-09-13 06:21:37,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 06:21:37,627 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:21:37,627 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:21:37,627 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 06:21:37,628 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:21:37,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:21:37,628 INFO L85 PathProgramCache]: Analyzing trace with hash 332140251, now seen corresponding path program 1 times [2024-09-13 06:21:37,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:21:37,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363749448] [2024-09-13 06:21:37,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:37,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:21:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:37,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:21:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:37,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 06:21:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:37,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 06:21:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 06:21:37,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:21:37,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363749448] [2024-09-13 06:21:37,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363749448] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:21:37,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:21:37,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 06:21:37,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490922528] [2024-09-13 06:21:37,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:21:37,709 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 06:21:37,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:21:37,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 06:21:37,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:21:37,710 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (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) [2024-09-13 06:21:37,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:21:37,716 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2024-09-13 06:21:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 06:21:37,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (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 [2024-09-13 06:21:37,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:21:37,717 INFO L225 Difference]: With dead ends: 29 [2024-09-13 06:21:37,717 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 06:21:37,717 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:21:37,718 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:21:37,718 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:21:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 06:21:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-13 06:21:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 06:21:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-09-13 06:21:37,721 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 24 [2024-09-13 06:21:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:21:37,722 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-09-13 06:21:37,722 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (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) [2024-09-13 06:21:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-09-13 06:21:37,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 06:21:37,722 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:21:37,722 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:21:37,722 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 06:21:37,723 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:21:37,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:21:37,725 INFO L85 PathProgramCache]: Analyzing trace with hash 332140412, now seen corresponding path program 1 times [2024-09-13 06:21:37,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:21:37,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949542698] [2024-09-13 06:21:37,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:37,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:21:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:37,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:21:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:37,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 06:21:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:37,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 06:21:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 06:21:37,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:21:37,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949542698] [2024-09-13 06:21:37,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949542698] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:21:37,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:21:37,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 06:21:37,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318675432] [2024-09-13 06:21:37,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:21:37,769 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 06:21:37,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:21:37,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 06:21:37,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:21:37,771 INFO L87 Difference]: Start difference. First operand 29 states and 34 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) [2024-09-13 06:21:37,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:21:37,783 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-09-13 06:21:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 06:21:37,783 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 [2024-09-13 06:21:37,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:21:37,784 INFO L225 Difference]: With dead ends: 28 [2024-09-13 06:21:37,784 INFO L226 Difference]: Without dead ends: 28 [2024-09-13 06:21:37,784 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:21:37,785 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:21:37,785 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:21:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-13 06:21:37,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-13 06:21:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 06:21:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-09-13 06:21:37,789 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 24 [2024-09-13 06:21:37,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:21:37,789 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-09-13 06:21:37,789 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) [2024-09-13 06:21:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-09-13 06:21:37,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-13 06:21:37,790 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:21:37,790 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:21:37,790 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 06:21:37,790 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:21:37,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:21:37,791 INFO L85 PathProgramCache]: Analyzing trace with hash -633490312, now seen corresponding path program 1 times [2024-09-13 06:21:37,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:21:37,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639629149] [2024-09-13 06:21:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:37,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:21:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:21:37,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403954012] [2024-09-13 06:21:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:37,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:21:37,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:21:37,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:21:37,924 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 06:21:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:37,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-13 06:21:37,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:21:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 06:21:38,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:21:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 06:21:41,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:21:41,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639629149] [2024-09-13 06:21:41,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:21:41,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403954012] [2024-09-13 06:21:41,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403954012] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 06:21:41,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:21:41,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-09-13 06:21:41,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017998264] [2024-09-13 06:21:41,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:21:41,058 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 06:21:41,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:21:41,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 06:21:41,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-09-13 06:21:41,059 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 06:21:41,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:21:41,575 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2024-09-13 06:21:41,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 06:21:41,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-09-13 06:21:41,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:21:41,577 INFO L225 Difference]: With dead ends: 41 [2024-09-13 06:21:41,577 INFO L226 Difference]: Without dead ends: 41 [2024-09-13 06:21:41,577 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-09-13 06:21:41,577 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 06:21:41,578 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 76 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 06:21:41,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-13 06:21:41,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-09-13 06:21:41,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 06:21:41,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2024-09-13 06:21:41,586 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 29 [2024-09-13 06:21:41,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:21:41,587 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2024-09-13 06:21:41,587 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 06:21:41,587 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2024-09-13 06:21:41,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-13 06:21:41,588 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:21:41,588 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:21:41,605 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 06:21:41,792 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 06:21:41,793 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:21:41,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:21:41,793 INFO L85 PathProgramCache]: Analyzing trace with hash -633488390, now seen corresponding path program 1 times [2024-09-13 06:21:41,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:21:41,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428668732] [2024-09-13 06:21:41,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:41,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:21:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:43,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:21:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:43,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 06:21:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:43,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 06:21:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:43,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 06:21:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 06:21:43,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:21:43,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428668732] [2024-09-13 06:21:43,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428668732] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:21:43,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896005252] [2024-09-13 06:21:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:43,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:21:43,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:21:43,670 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:21:43,679 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 06:21:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:43,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 06:21:43,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:21:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 06:21:44,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:21:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 06:21:45,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896005252] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:21:45,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:21:45,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 12 [2024-09-13 06:21:45,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057371698] [2024-09-13 06:21:45,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:21:45,342 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 06:21:45,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:21:45,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 06:21:45,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-09-13 06:21:45,344 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 06:21:45,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:21:45,513 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2024-09-13 06:21:45,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 06:21:45,513 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 29 [2024-09-13 06:21:45,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:21:45,515 INFO L225 Difference]: With dead ends: 48 [2024-09-13 06:21:45,515 INFO L226 Difference]: Without dead ends: 48 [2024-09-13 06:21:45,515 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-09-13 06:21:45,516 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:21:45,516 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 69 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:21:45,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-13 06:21:45,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2024-09-13 06:21:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 06:21:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2024-09-13 06:21:45,521 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 29 [2024-09-13 06:21:45,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:21:45,521 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2024-09-13 06:21:45,522 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 06:21:45,522 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2024-09-13 06:21:45,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-13 06:21:45,523 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:21:45,523 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:21:45,541 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 06:21:45,723 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 06:21:45,724 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:21:45,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:21:45,725 INFO L85 PathProgramCache]: Analyzing trace with hash -885297805, now seen corresponding path program 1 times [2024-09-13 06:21:45,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:21:45,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533805853] [2024-09-13 06:21:45,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:45,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:21:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:21:45,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173965238] [2024-09-13 06:21:45,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:45,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:21:45,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:21:45,774 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) [2024-09-13 06:21:45,776 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 06:21:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:45,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-13 06:21:45,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:21:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 06:21:45,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:21:45,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:21:45,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533805853] [2024-09-13 06:21:45,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:21:45,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173965238] [2024-09-13 06:21:45,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173965238] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:21:45,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:21:45,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 06:21:45,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854143877] [2024-09-13 06:21:45,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:21:45,877 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:21:45,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:21:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:21:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:21:45,878 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 06:21:46,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:21:46,015 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2024-09-13 06:21:46,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:21:46,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 37 [2024-09-13 06:21:46,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:21:46,018 INFO L225 Difference]: With dead ends: 46 [2024-09-13 06:21:46,018 INFO L226 Difference]: Without dead ends: 45 [2024-09-13 06:21:46,018 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:21:46,018 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:21:46,019 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 42 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:21:46,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-13 06:21:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-09-13 06:21:46,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 06:21:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2024-09-13 06:21:46,030 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 37 [2024-09-13 06:21:46,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:21:46,030 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2024-09-13 06:21:46,030 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 06:21:46,030 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2024-09-13 06:21:46,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-13 06:21:46,031 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:21:46,031 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:21:46,053 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 06:21:46,231 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-13 06:21:46,232 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:21:46,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:21:46,233 INFO L85 PathProgramCache]: Analyzing trace with hash -367612141, now seen corresponding path program 1 times [2024-09-13 06:21:46,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:21:46,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166835119] [2024-09-13 06:21:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:46,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:21:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:53,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:21:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:53,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 06:21:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:53,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 06:21:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:53,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 06:21:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:53,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 06:21:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:53,989 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 06:21:53,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:21:53,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166835119] [2024-09-13 06:21:53,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166835119] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:21:53,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096796415] [2024-09-13 06:21:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:53,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:21:53,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:21:53,991 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) [2024-09-13 06:21:53,993 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 06:21:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:21:54,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-13 06:21:54,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:21:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 06:21:54,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:21:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 06:21:55,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096796415] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:21:55,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:21:55,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-09-13 06:21:55,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044283635] [2024-09-13 06:21:55,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:21:55,994 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-13 06:21:55,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:21:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-13 06:21:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-09-13 06:21:55,995 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 7 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-13 06:21:58,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:21:58,379 INFO L93 Difference]: Finished difference Result 102 states and 138 transitions. [2024-09-13 06:21:58,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-13 06:21:58,380 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 7 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-09-13 06:21:58,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:21:58,382 INFO L225 Difference]: With dead ends: 102 [2024-09-13 06:21:58,382 INFO L226 Difference]: Without dead ends: 102 [2024-09-13 06:21:58,383 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=222, Invalid=708, Unknown=0, NotChecked=0, Total=930 [2024-09-13 06:21:58,383 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 20 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-13 06:21:58,383 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 177 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-13 06:21:58,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-13 06:21:58,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 91. [2024-09-13 06:21:58,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 73 states have internal predecessors, (92), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-13 06:21:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 124 transitions. [2024-09-13 06:21:58,391 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 124 transitions. Word has length 39 [2024-09-13 06:21:58,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:21:58,391 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 124 transitions. [2024-09-13 06:21:58,391 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 7 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-13 06:21:58,391 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 124 transitions. [2024-09-13 06:21:58,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-13 06:21:58,392 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:21:58,392 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:21:58,409 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 06:21:58,593 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 [2024-09-13 06:21:58,593 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:21:58,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:21:58,593 INFO L85 PathProgramCache]: Analyzing trace with hash -954420077, now seen corresponding path program 2 times [2024-09-13 06:21:58,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:21:58,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191538321] [2024-09-13 06:21:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:21:58,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:21:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:21:58,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956997746] [2024-09-13 06:21:58,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 06:21:58,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:21:58,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:21:58,613 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:21:58,615 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 06:21:58,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 06:21:58,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:21:58,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-13 06:21:58,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:21:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 06:21:59,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:22:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 06:22:04,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:22:04,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191538321] [2024-09-13 06:22:04,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:22:04,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956997746] [2024-09-13 06:22:04,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956997746] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:22:04,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 06:22:04,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2024-09-13 06:22:04,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679256219] [2024-09-13 06:22:04,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 06:22:04,820 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-13 06:22:04,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:22:04,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-13 06:22:04,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-09-13 06:22:04,821 INFO L87 Difference]: Start difference. First operand 91 states and 124 transitions. Second operand has 17 states, 16 states have (on average 2.1875) internal successors, (35), 17 states have internal predecessors, (35), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-13 06:22:08,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:22:08,188 INFO L93 Difference]: Finished difference Result 126 states and 176 transitions. [2024-09-13 06:22:08,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 06:22:08,188 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 17 states have internal predecessors, (35), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 39 [2024-09-13 06:22:08,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:22:08,190 INFO L225 Difference]: With dead ends: 126 [2024-09-13 06:22:08,190 INFO L226 Difference]: Without dead ends: 126 [2024-09-13 06:22:08,190 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2024-09-13 06:22:08,191 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:22:08,191 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 144 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-13 06:22:08,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-09-13 06:22:08,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 117. [2024-09-13 06:22:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 101 states have (on average 1.2376237623762376) internal successors, (125), 94 states have internal predecessors, (125), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-13 06:22:08,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 165 transitions. [2024-09-13 06:22:08,203 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 165 transitions. Word has length 39 [2024-09-13 06:22:08,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:22:08,203 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 165 transitions. [2024-09-13 06:22:08,203 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 17 states have internal predecessors, (35), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-13 06:22:08,203 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 165 transitions. [2024-09-13 06:22:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-13 06:22:08,204 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:22:08,204 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:22:08,219 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 06:22:08,404 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 06:22:08,404 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:22:08,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:22:08,405 INFO L85 PathProgramCache]: Analyzing trace with hash -954418155, now seen corresponding path program 2 times [2024-09-13 06:22:08,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:22:08,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340301654] [2024-09-13 06:22:08,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:22:08,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:22:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:22:08,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823936439] [2024-09-13 06:22:08,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 06:22:08,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:22:08,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:22:08,428 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:22:08,429 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 06:22:08,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 06:22:08,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:22:08,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-13 06:22:08,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:22:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 06:22:08,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:22:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 06:22:16,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:22:16,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340301654] [2024-09-13 06:22:16,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:22:16,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823936439] [2024-09-13 06:22:16,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823936439] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:22:16,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 06:22:16,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2024-09-13 06:22:16,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607944928] [2024-09-13 06:22:16,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 06:22:16,306 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-13 06:22:16,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:22:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-13 06:22:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2024-09-13 06:22:16,307 INFO L87 Difference]: Start difference. First operand 117 states and 165 transitions. Second operand has 17 states, 16 states have (on average 2.1875) internal successors, (35), 17 states have internal predecessors, (35), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-13 06:22:16,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:22:16,683 INFO L93 Difference]: Finished difference Result 130 states and 180 transitions. [2024-09-13 06:22:16,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 06:22:16,683 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 17 states have internal predecessors, (35), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 39 [2024-09-13 06:22:16,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:22:16,684 INFO L225 Difference]: With dead ends: 130 [2024-09-13 06:22:16,684 INFO L226 Difference]: Without dead ends: 130 [2024-09-13 06:22:16,684 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2024-09-13 06:22:16,684 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 06:22:16,684 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 152 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 06:22:16,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-13 06:22:16,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2024-09-13 06:22:16,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 110 states have (on average 1.2272727272727273) internal successors, (135), 104 states have internal predecessors, (135), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-13 06:22:16,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 179 transitions. [2024-09-13 06:22:16,691 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 179 transitions. Word has length 39 [2024-09-13 06:22:16,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:22:16,691 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 179 transitions. [2024-09-13 06:22:16,691 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 17 states have internal predecessors, (35), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-13 06:22:16,691 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 179 transitions. [2024-09-13 06:22:16,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-13 06:22:16,692 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:22:16,692 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:22:16,699 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 06:22:16,896 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 06:22:16,897 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:22:16,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:22:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1997052946, now seen corresponding path program 3 times [2024-09-13 06:22:16,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:22:16,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602595889] [2024-09-13 06:22:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:22:16,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:22:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:22:16,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848337681] [2024-09-13 06:22:16,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 06:22:16,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:22:16,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:22:16,945 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:22:16,957 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 06:22:17,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 06:22:17,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:22:17,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-13 06:22:17,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:22:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-13 06:22:22,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:22:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-13 06:22:39,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:22:39,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602595889] [2024-09-13 06:22:39,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:22:39,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848337681] [2024-09-13 06:22:39,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848337681] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 06:22:39,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:22:39,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2024-09-13 06:22:39,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620294218] [2024-09-13 06:22:39,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:22:39,611 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 06:22:39,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:22:39,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 06:22:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-09-13 06:22:39,612 INFO L87 Difference]: Start difference. First operand 129 states and 179 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 06:22:40,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:22:40,239 INFO L93 Difference]: Finished difference Result 143 states and 191 transitions. [2024-09-13 06:22:40,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 06:22:40,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-09-13 06:22:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:22:40,243 INFO L225 Difference]: With dead ends: 143 [2024-09-13 06:22:40,243 INFO L226 Difference]: Without dead ends: 143 [2024-09-13 06:22:40,243 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2024-09-13 06:22:40,244 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:22:40,244 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 62 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:22:40,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-09-13 06:22:40,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 125. [2024-09-13 06:22:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 102 states have internal predecessors, (123), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-13 06:22:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 167 transitions. [2024-09-13 06:22:40,260 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 167 transitions. Word has length 49 [2024-09-13 06:22:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:22:40,260 INFO L474 AbstractCegarLoop]: Abstraction has 125 states and 167 transitions. [2024-09-13 06:22:40,260 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 06:22:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 167 transitions. [2024-09-13 06:22:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-13 06:22:40,265 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:22:40,265 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:22:40,280 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 06:22:40,466 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:22:40,466 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:22:40,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:22:40,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1079280108, now seen corresponding path program 4 times [2024-09-13 06:22:40,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:22:40,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222261906] [2024-09-13 06:22:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:22:40,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:22:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:22:40,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013955987] [2024-09-13 06:22:40,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 06:22:40,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:22:40,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:22:40,499 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:22:40,500 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 06:22:40,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 06:22:40,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:22:40,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-13 06:22:40,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:22:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-13 06:22:41,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:22:41,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:22:41,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222261906] [2024-09-13 06:22:41,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:22:41,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013955987] [2024-09-13 06:22:41,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013955987] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:22:41,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:22:41,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-09-13 06:22:41,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493824994] [2024-09-13 06:22:41,672 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 06:22:41,672 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 06:22:41,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:22:41,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 06:22:41,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-09-13 06:22:41,673 INFO L87 Difference]: Start difference. First operand 125 states and 167 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 06:22:41,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:22:41,881 INFO L93 Difference]: Finished difference Result 138 states and 182 transitions. [2024-09-13 06:22:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 06:22:41,882 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 49 [2024-09-13 06:22:41,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:22:41,883 INFO L225 Difference]: With dead ends: 138 [2024-09-13 06:22:41,883 INFO L226 Difference]: Without dead ends: 133 [2024-09-13 06:22:41,883 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-09-13 06:22:41,883 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:22:41,884 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 182 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:22:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-13 06:22:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2024-09-13 06:22:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 108 states have (on average 1.1851851851851851) internal successors, (128), 107 states have internal predecessors, (128), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-13 06:22:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 174 transitions. [2024-09-13 06:22:41,892 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 174 transitions. Word has length 49 [2024-09-13 06:22:41,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:22:41,892 INFO L474 AbstractCegarLoop]: Abstraction has 131 states and 174 transitions. [2024-09-13 06:22:41,892 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 06:22:41,893 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 174 transitions. [2024-09-13 06:22:41,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-13 06:22:41,894 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:22:41,894 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:22:41,911 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-13 06:22:42,095 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:22:42,095 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:22:42,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:22:42,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1026292615, now seen corresponding path program 5 times [2024-09-13 06:22:42,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:22:42,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517027541] [2024-09-13 06:22:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:22:42,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:22:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:22:42,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683467330] [2024-09-13 06:22:42,139 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 06:22:42,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:22:42,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:22:42,140 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:22:42,145 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 06:22:42,226 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-13 06:22:42,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:22:42,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-13 06:22:42,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:22:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 40 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-13 06:22:43,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:22:46,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:22:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517027541] [2024-09-13 06:22:46,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:22:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683467330] [2024-09-13 06:22:46,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683467330] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:22:46,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:22:46,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-09-13 06:22:46,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717341986] [2024-09-13 06:22:46,034 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 06:22:46,034 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 06:22:46,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:22:46,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 06:22:46,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2024-09-13 06:22:46,035 INFO L87 Difference]: Start difference. First operand 131 states and 174 transitions. Second operand has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-13 06:22:46,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:22:46,289 INFO L93 Difference]: Finished difference Result 155 states and 203 transitions. [2024-09-13 06:22:46,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 06:22:46,289 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 59 [2024-09-13 06:22:46,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:22:46,290 INFO L225 Difference]: With dead ends: 155 [2024-09-13 06:22:46,290 INFO L226 Difference]: Without dead ends: 144 [2024-09-13 06:22:46,290 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2024-09-13 06:22:46,291 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:22:46,291 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 217 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:22:46,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-13 06:22:46,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2024-09-13 06:22:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 117 states have internal predecessors, (139), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-13 06:22:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 189 transitions. [2024-09-13 06:22:46,306 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 189 transitions. Word has length 59 [2024-09-13 06:22:46,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:22:46,307 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 189 transitions. [2024-09-13 06:22:46,307 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-13 06:22:46,307 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 189 transitions. [2024-09-13 06:22:46,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-13 06:22:46,308 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:22:46,308 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:22:46,326 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 06:22:46,508 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-13 06:22:46,509 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 06:22:46,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:22:46,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1535622905, now seen corresponding path program 6 times [2024-09-13 06:22:46,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:22:46,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003368465] [2024-09-13 06:22:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:22:46,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:22:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:22:46,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996593748] [2024-09-13 06:22:46,537 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 06:22:46,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:22:46,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:22:46,539 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:22:46,540 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 06:22:46,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-13 06:22:46,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:22:46,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-13 06:22:46,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:22:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 40 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-13 06:22:49,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:22:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-13 06:22:50,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:22:50,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003368465] [2024-09-13 06:22:50,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:22:50,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996593748] [2024-09-13 06:22:50,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996593748] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:22:50,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 06:22:50,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2024-09-13 06:22:50,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42112149] [2024-09-13 06:22:50,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 06:22:50,970 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 06:22:50,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:22:50,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 06:22:50,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2024-09-13 06:22:50,971 INFO L87 Difference]: Start difference. First operand 143 states and 189 transitions. Second operand has 25 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 25 states have internal predecessors, (55), 8 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-13 06:22:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:22:52,698 INFO L93 Difference]: Finished difference Result 189 states and 242 transitions. [2024-09-13 06:22:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-13 06:22:52,699 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 25 states have internal predecessors, (55), 8 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) Word has length 59 [2024-09-13 06:22:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:22:52,699 INFO L225 Difference]: With dead ends: 189 [2024-09-13 06:22:52,699 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 06:22:52,700 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2024-09-13 06:22:52,700 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-13 06:22:52,700 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 257 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-13 06:22:52,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 06:22:52,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 06:22:52,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:22:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 06:22:52,701 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2024-09-13 06:22:52,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:22:52,701 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 06:22:52,701 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 25 states have internal predecessors, (55), 8 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-13 06:22:52,701 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 06:22:52,701 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 06:22:52,706 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-09-13 06:22:52,706 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (4 of 6 remaining) [2024-09-13 06:22:52,706 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (3 of 6 remaining) [2024-09-13 06:22:52,706 INFO L785 garLoopResultBuilder]: Registering result SAFE for location assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 6 remaining) [2024-09-13 06:22:52,707 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-09-13 06:22:52,707 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 6 remaining) [2024-09-13 06:22:52,720 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-13 06:22:52,908 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-13 06:22:52,911 INFO L408 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:22:52,913 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 06:22:52,915 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-13 06:22:52,915 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-13 06:22:52,915 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 06:22:52 BoogieIcfgContainer [2024-09-13 06:22:52,916 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 06:22:52,916 INFO L158 Benchmark]: Toolchain (without parser) took 77336.22ms. Allocated memory was 151.0MB in the beginning and 740.3MB in the end (delta: 589.3MB). Free memory was 79.0MB in the beginning and 446.1MB in the end (delta: -367.2MB). Peak memory consumption was 224.8MB. Max. memory is 16.1GB. [2024-09-13 06:22:52,916 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory was 105.0MB in the beginning and 104.9MB in the end (delta: 160.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:22:52,916 INFO L158 Benchmark]: Witness Parser took 0.09ms. Allocated memory is still 151.0MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:22:52,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.34ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 78.7MB in the beginning and 172.2MB in the end (delta: -93.5MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2024-09-13 06:22:52,917 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.54ms. Allocated memory is still 203.4MB. Free memory was 172.2MB in the beginning and 171.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 06:22:52,917 INFO L158 Benchmark]: Boogie Preprocessor took 40.88ms. Allocated memory is still 203.4MB. Free memory was 171.2MB in the beginning and 168.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 06:22:52,917 INFO L158 Benchmark]: RCFGBuilder took 347.53ms. Allocated memory is still 203.4MB. Free memory was 168.8MB in the beginning and 152.3MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-13 06:22:52,917 INFO L158 Benchmark]: TraceAbstraction took 76579.68ms. Allocated memory was 203.4MB in the beginning and 740.3MB in the end (delta: 536.9MB). Free memory was 151.2MB in the beginning and 446.1MB in the end (delta: -294.9MB). Peak memory consumption was 243.0MB. Max. memory is 16.1GB. [2024-09-13 06:22:52,918 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory was 105.0MB in the beginning and 104.9MB in the end (delta: 160.7kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.09ms. Allocated memory is still 151.0MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.34ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 78.7MB in the beginning and 172.2MB in the end (delta: -93.5MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.54ms. Allocated memory is still 203.4MB. Free memory was 172.2MB in the beginning and 171.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.88ms. Allocated memory is still 203.4MB. Free memory was 171.2MB in the beginning and 168.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 347.53ms. Allocated memory is still 203.4MB. Free memory was 168.8MB in the beginning and 152.3MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 76579.68ms. Allocated memory was 203.4MB in the beginning and 740.3MB in the end (delta: 536.9MB). Free memory was 151.2MB in the beginning and 446.1MB in the end (delta: -294.9MB). Peak memory consumption was 243.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 34]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 12]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 12]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 9]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 15]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 12]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 76.5s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 152 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 132 mSDsluCounter, 1644 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1301 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2263 IncrementalHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 343 mSDtfsCounter, 2263 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 828 GetRequests, 619 SyntacticMatches, 19 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 18.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=14, InterpolantAutomatonStates: 149, 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, 15 MinimizatonAttempts, 49 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 62.8s InterpolantComputationTime, 933 NumberOfCodeBlocks, 921 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 832 ConstructedInterpolants, 5 QuantifiedInterpolants, 16494 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1081 ConjunctsInSsa, 262 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 475/652 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 06:22:53,082 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...