This is Ultimate 0.2.4-tmp.dk.referee-eval-f1d7dc9-m [2024-09-20 13:38:21,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 13:38:21,488 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 13:38:21,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 13:38:21,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 13:38:21,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 13:38:21,520 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 13:38:21,520 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 13:38:21,520 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 13:38:21,520 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 13:38:21,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 13:38:21,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 13:38:21,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 13:38:21,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 13:38:21,522 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 13:38:21,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 13:38:21,522 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 13:38:21,522 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 13:38:21,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 13:38:21,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 13:38:21,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 13:38:21,529 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 13:38:21,530 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 13:38:21,530 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 13:38:21,530 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 13:38:21,531 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 13:38:21,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 13:38:21,531 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 13:38:21,531 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 13:38:21,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 13:38:21,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 13:38:21,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 13:38:21,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:38:21,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 13:38:21,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 13:38:21,533 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 13:38:21,533 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 13:38:21,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 13:38:21,534 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 13:38:21,534 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 13:38:21,534 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 13:38:21,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 13:38:21,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-20 13:38:21,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 13:38:21,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 13:38:21,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 13:38:21,721 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 13:38:21,721 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 13:38:21,722 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c [2024-09-20 13:38:22,898 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 13:38:23,047 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 13:38:23,047 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c [2024-09-20 13:38:23,054 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0bfa59571/e5bc6c5014b44c92aa7ddba5920a5e98/FLAG743e910b1 [2024-09-20 13:38:23,466 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0bfa59571/e5bc6c5014b44c92aa7ddba5920a5e98 [2024-09-20 13:38:23,468 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-20 13:38:23,468 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-20 13:38:23,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/hard2_valuebound100.yml/witness-2.1.yml [2024-09-20 13:38:23,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 13:38:23,506 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-20 13:38:23,507 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 13:38:23,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 13:38:23,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 13:38:23,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:38:23" (1/2) ... [2024-09-20 13:38:23,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658841b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:38:23, skipping insertion in model container [2024-09-20 13:38:23,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:38:23" (1/2) ... [2024-09-20 13:38:23,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@59a063b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:38:23, skipping insertion in model container [2024-09-20 13:38:23,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:38:23" (2/2) ... [2024-09-20 13:38:23,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658841b8 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:38:23, skipping insertion in model container [2024-09-20 13:38:23,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:38:23" (2/2) ... [2024-09-20 13:38:23,521 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-20 13:38:23,521 INFO L1541 ArrayList]: Loop invariant at [L44-L56] ((((d == p) && (1 <= p)) && (((long long) A + d) == (((long long) q + p) + r))) && (B == 1)) [2024-09-20 13:38:23,521 INFO L1541 ArrayList]: Loop invariant at [L34-L42] ((((((((A == r) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((((A == r) && (((long long) A + d) == ((long long) p + r))) && ((d / 2) <= r)) && ((d % 2) == 0)) && (q == 0)) && (B == 1)) && (4 <= (d / 2)))) || ((((((A == r) && (d == 4)) && (2 <= r)) && (q == 0)) && (B == 1)) && (p == 4))) || (((((A == r) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) [2024-09-20 13:38:23,521 INFO L1541 ArrayList]: Function contract at [L14]: requires (\old(cond) != 0), ensures (\old(cond) != 0) [2024-09-20 13:38:23,535 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 13:38:23,650 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c[526,539] [2024-09-20 13:38:23,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:38:23,672 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-20 13:38:23,698 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c[526,539] Start Parsing Local Start Parsing Local [2024-09-20 13:38:23,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:38:23,730 INFO L204 MainTranslator]: Completed translation [2024-09-20 13:38:23,730 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:38:23 WrapperNode [2024-09-20 13:38:23,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 13:38:23,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 13:38:23,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 13:38:23,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 13:38:23,737 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 20.09 01:38:23" (1/1) ... [2024-09-20 13:38:23,745 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 20.09 01:38:23" (1/1) ... [2024-09-20 13:38:23,766 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-09-20 13:38:23,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 13:38:23,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 13:38:23,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 13:38:23,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 13:38:23,777 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 20.09 01:38:23" (1/1) ... [2024-09-20 13:38:23,777 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 20.09 01:38:23" (1/1) ... [2024-09-20 13:38:23,779 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 20.09 01:38:23" (1/1) ... [2024-09-20 13:38:23,786 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-20 13:38:23,789 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 20.09 01:38:23" (1/1) ... [2024-09-20 13:38:23,789 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 20.09 01:38:23" (1/1) ... [2024-09-20 13:38:23,791 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 20.09 01:38:23" (1/1) ... [2024-09-20 13:38:23,797 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 20.09 01:38:23" (1/1) ... [2024-09-20 13:38:23,798 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 20.09 01:38:23" (1/1) ... [2024-09-20 13:38:23,799 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 20.09 01:38:23" (1/1) ... [2024-09-20 13:38:23,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 13:38:23,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 13:38:23,804 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 13:38:23,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 13:38:23,804 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 20.09 01:38:23" (1/1) ... [2024-09-20 13:38:23,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:38:23,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:38:23,829 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) [2024-09-20 13:38:23,831 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 [2024-09-20 13:38:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 13:38:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-20 13:38:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 13:38:23,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 13:38:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 13:38:23,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 13:38:23,909 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 13:38:23,910 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 13:38:24,069 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-20 13:38:24,084 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-09-20 13:38:24,085 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 13:38:24,104 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 13:38:24,105 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-20 13:38:24,105 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:38:24 BoogieIcfgContainer [2024-09-20 13:38:24,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 13:38:24,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 13:38:24,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 13:38:24,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 13:38:24,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:38:23" (1/4) ... [2024-09-20 13:38:24,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517a0c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:38:24, skipping insertion in model container [2024-09-20 13:38:24,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:38:23" (2/4) ... [2024-09-20 13:38:24,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517a0c4b and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:38:24, skipping insertion in model container [2024-09-20 13:38:24,111 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 20.09 01:38:23" (3/4) ... [2024-09-20 13:38:24,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517a0c4b and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:38:24, skipping insertion in model container [2024-09-20 13:38:24,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:38:24" (4/4) ... [2024-09-20 13:38:24,112 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound100.c [2024-09-20 13:38:24,125 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 13:38:24,125 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-09-20 13:38:24,159 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 13:38:24,163 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;@2ffc50df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 13:38:24,163 INFO L337 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-09-20 13:38:24,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 26 states have internal predecessors, (35), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 13:38:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-09-20 13:38:24,169 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:38:24,170 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-09-20 13:38:24,170 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-20 13:38:24,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:38:24,174 INFO L85 PathProgramCache]: Analyzing trace with hash 3877925, now seen corresponding path program 1 times [2024-09-20 13:38:24,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:38:24,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741788123] [2024-09-20 13:38:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:24,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:38:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:38:24,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:38:24,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741788123] [2024-09-20 13:38:24,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741788123] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:38:24,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:38:24,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 13:38:24,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563343877] [2024-09-20 13:38:24,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:38:24,285 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 13:38:24,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:38:24,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 13:38:24,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 13:38:24,306 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 26 states have internal predecessors, (35), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2024-09-20 13:38:24,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:38:24,324 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-09-20 13:38:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 13:38:24,326 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), 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) Word has length 4 [2024-09-20 13:38:24,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:38:24,330 INFO L225 Difference]: With dead ends: 35 [2024-09-20 13:38:24,330 INFO L226 Difference]: Without dead ends: 33 [2024-09-20 13:38:24,332 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 [2024-09-20 13:38:24,345 INFO L434 NwaCegarLoop]: 40 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, 40 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 [2024-09-20 13:38:24,349 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:38:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-20 13:38:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-20 13:38:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 25 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 13:38:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-09-20 13:38:24,399 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 4 [2024-09-20 13:38:24,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:38:24,400 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-09-20 13:38:24,400 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), 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) [2024-09-20 13:38:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-09-20 13:38:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-09-20 13:38:24,402 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:38:24,403 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-09-20 13:38:24,403 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 13:38:24,404 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-20 13:38:24,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:38:24,405 INFO L85 PathProgramCache]: Analyzing trace with hash 3879847, now seen corresponding path program 1 times [2024-09-20 13:38:24,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:38:24,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839198989] [2024-09-20 13:38:24,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:24,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:38:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:38:24,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:38:24,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839198989] [2024-09-20 13:38:24,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839198989] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:38:24,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:38:24,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 13:38:24,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195111657] [2024-09-20 13:38:24,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:38:24,527 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:38:24,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:38:24,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:38:24,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:38:24,528 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-09-20 13:38:24,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:38:24,570 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2024-09-20 13:38:24,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:38:24,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2024-09-20 13:38:24,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:38:24,572 INFO L225 Difference]: With dead ends: 44 [2024-09-20 13:38:24,572 INFO L226 Difference]: Without dead ends: 44 [2024-09-20 13:38:24,572 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:38:24,573 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:38:24,573 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 55 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:38:24,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-20 13:38:24,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-09-20 13:38:24,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 13:38:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2024-09-20 13:38:24,579 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 4 [2024-09-20 13:38:24,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:38:24,579 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2024-09-20 13:38:24,579 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-09-20 13:38:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2024-09-20 13:38:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-20 13:38:24,580 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:38:24,580 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:38:24,580 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 13:38:24,580 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-20 13:38:24,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:38:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash 331112384, now seen corresponding path program 1 times [2024-09-20 13:38:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:38:24,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835433895] [2024-09-20 13:38:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:24,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:38:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:38:24,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:38:24,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835433895] [2024-09-20 13:38:24,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835433895] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:38:24,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:38:24,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 13:38:24,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880863785] [2024-09-20 13:38:24,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:38:24,645 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:38:24,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:38:24,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:38:24,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:38:24,647 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-09-20 13:38:24,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:38:24,674 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2024-09-20 13:38:24,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:38:24,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2024-09-20 13:38:24,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:38:24,675 INFO L225 Difference]: With dead ends: 43 [2024-09-20 13:38:24,675 INFO L226 Difference]: Without dead ends: 43 [2024-09-20 13:38:24,675 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:38:24,676 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:38:24,676 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:38:24,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-20 13:38:24,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-20 13:38:24,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 30 states have internal predecessors, (34), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 13:38:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2024-09-20 13:38:24,681 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 9 [2024-09-20 13:38:24,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:38:24,682 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2024-09-20 13:38:24,682 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-09-20 13:38:24,682 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2024-09-20 13:38:24,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-20 13:38:24,684 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:38:24,684 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:38:24,684 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-20 13:38:24,684 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-20 13:38:24,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:38:24,685 INFO L85 PathProgramCache]: Analyzing trace with hash 331112223, now seen corresponding path program 1 times [2024-09-20 13:38:24,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:38:24,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212297995] [2024-09-20 13:38:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:24,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:38:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:38:24,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:38:24,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212297995] [2024-09-20 13:38:24,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212297995] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:38:24,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:38:24,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 13:38:24,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955406022] [2024-09-20 13:38:24,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:38:24,748 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:38:24,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:38:24,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:38:24,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:38:24,749 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-09-20 13:38:24,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:38:24,758 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-09-20 13:38:24,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:38:24,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2024-09-20 13:38:24,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:38:24,761 INFO L225 Difference]: With dead ends: 41 [2024-09-20 13:38:24,761 INFO L226 Difference]: Without dead ends: 41 [2024-09-20 13:38:24,762 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:38:24,762 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 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 [2024-09-20 13:38:24,763 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:38:24,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-20 13:38:24,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-20 13:38:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 13:38:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2024-09-20 13:38:24,770 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 9 [2024-09-20 13:38:24,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:38:24,770 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2024-09-20 13:38:24,772 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-09-20 13:38:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2024-09-20 13:38:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-20 13:38:24,773 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:38:24,773 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:38:24,773 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-20 13:38:24,773 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-20 13:38:24,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:38:24,774 INFO L85 PathProgramCache]: Analyzing trace with hash 938055942, now seen corresponding path program 1 times [2024-09-20 13:38:24,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:38:24,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283075408] [2024-09-20 13:38:24,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:24,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:38:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:25,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:38:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:25,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:38:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:25,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 13:38:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 13:38:25,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:38:25,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283075408] [2024-09-20 13:38:25,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283075408] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:38:25,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532913552] [2024-09-20 13:38:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:25,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:38:25,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:38:25,051 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) [2024-09-20 13:38:25,052 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 13:38:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:25,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-20 13:38:25,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:38:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 13:38:25,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:38:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 13:38:25,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532913552] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:38:25,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:38:25,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-09-20 13:38:25,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623532142] [2024-09-20 13:38:25,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:38:25,304 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:38:25,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:38:25,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:38:25,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:38:25,306 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-20 13:38:25,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:38:25,413 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2024-09-20 13:38:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:38:25,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2024-09-20 13:38:25,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:38:25,414 INFO L225 Difference]: With dead ends: 58 [2024-09-20 13:38:25,414 INFO L226 Difference]: Without dead ends: 58 [2024-09-20 13:38:25,415 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:38:25,415 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:38:25,415 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 73 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:38:25,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-20 13:38:25,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2024-09-20 13:38:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 35 states have internal predecessors, (41), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 13:38:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 73 transitions. [2024-09-20 13:38:25,421 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 73 transitions. Word has length 22 [2024-09-20 13:38:25,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:38:25,421 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 73 transitions. [2024-09-20 13:38:25,421 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-20 13:38:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 73 transitions. [2024-09-20 13:38:25,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-20 13:38:25,422 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:38:25,422 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:38:25,434 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 13:38:25,622 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:38:25,623 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-20 13:38:25,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:38:25,623 INFO L85 PathProgramCache]: Analyzing trace with hash -987888612, now seen corresponding path program 1 times [2024-09-20 13:38:25,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:38:25,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986720652] [2024-09-20 13:38:25,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:25,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:38:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:38:25,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007199051] [2024-09-20 13:38:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:25,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:38:25,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:38:25,650 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) [2024-09-20 13:38:25,652 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 13:38:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:25,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-20 13:38:25,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:38:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 13:38:25,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 13:38:25,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:38:25,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986720652] [2024-09-20 13:38:25,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:38:25,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007199051] [2024-09-20 13:38:25,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007199051] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:38:25,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:38:25,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 13:38:25,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145345469] [2024-09-20 13:38:25,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:38:25,742 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:38:25,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:38:25,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:38:25,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:38:25,744 INFO L87 Difference]: Start difference. First operand 53 states and 73 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-20 13:38:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:38:25,770 INFO L93 Difference]: Finished difference Result 61 states and 86 transitions. [2024-09-20 13:38:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:38:25,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2024-09-20 13:38:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:38:25,771 INFO L225 Difference]: With dead ends: 61 [2024-09-20 13:38:25,771 INFO L226 Difference]: Without dead ends: 61 [2024-09-20 13:38:25,771 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:38:25,772 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:38:25,772 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 44 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:38:25,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-20 13:38:25,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2024-09-20 13:38:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 13:38:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2024-09-20 13:38:25,781 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 35 [2024-09-20 13:38:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:38:25,781 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2024-09-20 13:38:25,781 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-20 13:38:25,781 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2024-09-20 13:38:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-20 13:38:25,782 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:38:25,782 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:38:25,797 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 13:38:25,987 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-20 13:38:25,989 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-20 13:38:25,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:38:25,990 INFO L85 PathProgramCache]: Analyzing trace with hash -105745616, now seen corresponding path program 1 times [2024-09-20 13:38:25,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:38:25,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287429507] [2024-09-20 13:38:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:25,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:38:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:38:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:38:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 13:38:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:38:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 13:38:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 13:38:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 13:38:26,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:38:26,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287429507] [2024-09-20 13:38:26,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287429507] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:38:26,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:38:26,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 13:38:26,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206204295] [2024-09-20 13:38:26,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:38:26,055 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:38:26,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:38:26,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:38:26,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:38:26,055 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-20 13:38:26,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:38:26,079 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2024-09-20 13:38:26,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:38:26,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2024-09-20 13:38:26,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:38:26,081 INFO L225 Difference]: With dead ends: 65 [2024-09-20 13:38:26,081 INFO L226 Difference]: Without dead ends: 58 [2024-09-20 13:38:26,081 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:38:26,082 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:38:26,082 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:38:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-20 13:38:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-09-20 13:38:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 38 states have internal predecessors, (46), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 13:38:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 84 transitions. [2024-09-20 13:38:26,086 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 84 transitions. Word has length 40 [2024-09-20 13:38:26,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:38:26,087 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 84 transitions. [2024-09-20 13:38:26,087 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-20 13:38:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 84 transitions. [2024-09-20 13:38:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-20 13:38:26,087 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:38:26,088 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-09-20 13:38:26,088 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-20 13:38:26,088 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-20 13:38:26,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:38:26,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1427962715, now seen corresponding path program 2 times [2024-09-20 13:38:26,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:38:26,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860211746] [2024-09-20 13:38:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:26,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:38:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:38:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:38:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 13:38:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:38:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 13:38:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 13:38:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 13:38:26,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:38:26,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860211746] [2024-09-20 13:38:26,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860211746] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:38:26,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404958601] [2024-09-20 13:38:26,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:38:26,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:38:26,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:38:26,287 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) [2024-09-20 13:38:26,288 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 13:38:26,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:38:26,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:38:26,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-20 13:38:26,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:38:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 13:38:26,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:38:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 13:38:26,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404958601] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:38:26,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:38:26,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-09-20 13:38:26,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195816396] [2024-09-20 13:38:26,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:38:26,689 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 13:38:26,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:38:26,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 13:38:26,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:38:26,690 INFO L87 Difference]: Start difference. First operand 58 states and 84 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-20 13:38:26,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:38:26,933 INFO L93 Difference]: Finished difference Result 96 states and 151 transitions. [2024-09-20 13:38:26,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 13:38:26,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 40 [2024-09-20 13:38:26,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:38:26,935 INFO L225 Difference]: With dead ends: 96 [2024-09-20 13:38:26,935 INFO L226 Difference]: Without dead ends: 96 [2024-09-20 13:38:26,935 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-09-20 13:38:26,936 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 28 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:38:26,936 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 156 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:38:26,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-20 13:38:26,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2024-09-20 13:38:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 45 states have internal predecessors, (55), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 13:38:26,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 103 transitions. [2024-09-20 13:38:26,942 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 103 transitions. Word has length 40 [2024-09-20 13:38:26,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:38:26,942 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 103 transitions. [2024-09-20 13:38:26,942 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-20 13:38:26,943 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 103 transitions. [2024-09-20 13:38:26,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-20 13:38:26,944 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:38:26,944 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:38:26,955 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 13:38:27,147 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 [2024-09-20 13:38:27,148 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-20 13:38:27,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:38:27,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1366577296, now seen corresponding path program 1 times [2024-09-20 13:38:27,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:38:27,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449699267] [2024-09-20 13:38:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:27,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:38:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:27,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:38:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:27,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:38:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:27,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 13:38:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:27,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:38:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:27,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 13:38:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:27,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 13:38:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:27,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 13:38:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:27,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 13:38:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 13:38:27,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:38:27,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449699267] [2024-09-20 13:38:27,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449699267] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:38:27,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672905243] [2024-09-20 13:38:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:27,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:38:27,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:38:27,662 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) [2024-09-20 13:38:27,663 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 13:38:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:27,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-20 13:38:27,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:38:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 13:38:28,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:38:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 13:38:28,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672905243] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:38:28,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:38:28,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 5] total 12 [2024-09-20 13:38:28,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806971707] [2024-09-20 13:38:28,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:38:28,399 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 13:38:28,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:38:28,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 13:38:28,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-09-20 13:38:28,401 INFO L87 Difference]: Start difference. First operand 70 states and 103 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-09-20 13:38:28,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:38:28,583 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions. [2024-09-20 13:38:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 13:38:28,583 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 54 [2024-09-20 13:38:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:38:28,584 INFO L225 Difference]: With dead ends: 89 [2024-09-20 13:38:28,584 INFO L226 Difference]: Without dead ends: 82 [2024-09-20 13:38:28,584 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-20 13:38:28,585 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 24 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:38:28,585 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 223 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:38:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-20 13:38:28,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-09-20 13:38:28,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 51 states have internal predecessors, (59), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 13:38:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 119 transitions. [2024-09-20 13:38:28,598 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 119 transitions. Word has length 54 [2024-09-20 13:38:28,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:38:28,599 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 119 transitions. [2024-09-20 13:38:28,599 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-09-20 13:38:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 119 transitions. [2024-09-20 13:38:28,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-20 13:38:28,600 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:38:28,600 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2024-09-20 13:38:28,614 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 13:38:28,800 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 [2024-09-20 13:38:28,801 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-20 13:38:28,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:38:28,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1521850748, now seen corresponding path program 3 times [2024-09-20 13:38:28,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:38:28,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113845679] [2024-09-20 13:38:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:28,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:38:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:29,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:38:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:29,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:38:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:29,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 13:38:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:29,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:38:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:29,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 13:38:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:29,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 13:38:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:29,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 13:38:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:29,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 13:38:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:29,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 13:38:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 13:38:29,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:38:29,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113845679] [2024-09-20 13:38:29,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113845679] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:38:29,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818435872] [2024-09-20 13:38:29,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 13:38:29,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:38:29,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:38:29,110 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) [2024-09-20 13:38:29,111 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 13:38:29,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-20 13:38:29,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:38:29,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-20 13:38:29,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:38:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-09-20 13:38:29,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 13:38:29,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818435872] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:38:29,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 13:38:29,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-20 13:38:29,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138574715] [2024-09-20 13:38:29,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:38:29,566 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:38:29,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:38:29,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:38:29,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-09-20 13:38:29,567 INFO L87 Difference]: Start difference. First operand 82 states and 119 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-20 13:38:29,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:38:29,638 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2024-09-20 13:38:29,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:38:29,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2024-09-20 13:38:29,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:38:29,639 INFO L225 Difference]: With dead ends: 88 [2024-09-20 13:38:29,639 INFO L226 Difference]: Without dead ends: 88 [2024-09-20 13:38:29,639 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-09-20 13:38:29,639 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 24 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:38:29,639 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 53 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:38:29,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-20 13:38:29,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 81. [2024-09-20 13:38:29,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 49 states have (on average 1.183673469387755) internal successors, (58), 50 states have internal predecessors, (58), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 13:38:29,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 118 transitions. [2024-09-20 13:38:29,646 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 118 transitions. Word has length 58 [2024-09-20 13:38:29,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:38:29,646 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 118 transitions. [2024-09-20 13:38:29,647 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-20 13:38:29,647 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 118 transitions. [2024-09-20 13:38:29,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-20 13:38:29,651 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:38:29,651 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:38:29,665 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-20 13:38:29,852 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 [2024-09-20 13:38:29,852 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-20 13:38:29,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:38:29,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1043261556, now seen corresponding path program 1 times [2024-09-20 13:38:29,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:38:29,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830272514] [2024-09-20 13:38:29,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:29,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:38:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:38:29,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057114616] [2024-09-20 13:38:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:29,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:38:29,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:38:29,876 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) [2024-09-20 13:38:29,877 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 13:38:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:29,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-20 13:38:29,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:38:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-09-20 13:38:30,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:38:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-09-20 13:38:30,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:38:30,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830272514] [2024-09-20 13:38:30,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:38:30,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057114616] [2024-09-20 13:38:30,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057114616] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:38:30,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:38:30,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-09-20 13:38:30,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482685440] [2024-09-20 13:38:30,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 13:38:30,427 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 13:38:30,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:38:30,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 13:38:30,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-09-20 13:38:30,427 INFO L87 Difference]: Start difference. First operand 81 states and 118 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-20 13:38:30,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:38:30,728 INFO L93 Difference]: Finished difference Result 93 states and 133 transitions. [2024-09-20 13:38:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 13:38:30,729 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 67 [2024-09-20 13:38:30,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:38:30,729 INFO L225 Difference]: With dead ends: 93 [2024-09-20 13:38:30,729 INFO L226 Difference]: Without dead ends: 93 [2024-09-20 13:38:30,730 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2024-09-20 13:38:30,730 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:38:30,730 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 121 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:38:30,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-20 13:38:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 68. [2024-09-20 13:38:30,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 13:38:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 98 transitions. [2024-09-20 13:38:30,736 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 98 transitions. Word has length 67 [2024-09-20 13:38:30,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:38:30,736 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 98 transitions. [2024-09-20 13:38:30,736 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-20 13:38:30,736 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 98 transitions. [2024-09-20 13:38:30,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-20 13:38:30,737 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:38:30,737 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:38:30,749 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 13:38:30,941 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 [2024-09-20 13:38:30,942 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-20 13:38:30,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:38:30,942 INFO L85 PathProgramCache]: Analyzing trace with hash 538052032, now seen corresponding path program 1 times [2024-09-20 13:38:30,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:38:30,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452181641] [2024-09-20 13:38:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:30,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:38:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:31,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:38:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:31,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:38:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:31,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 13:38:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:31,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:38:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:31,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 13:38:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:31,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 13:38:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:31,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 13:38:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:31,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 13:38:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:31,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 13:38:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:31,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 13:38:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:31,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 13:38:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 13:38:31,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:38:31,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452181641] [2024-09-20 13:38:31,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452181641] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:38:31,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842162251] [2024-09-20 13:38:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:38:31,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:38:31,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:38:31,299 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) [2024-09-20 13:38:31,300 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 13:38:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:38:31,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-20 13:38:31,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:38:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-09-20 13:38:31,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:38:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-09-20 13:38:31,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842162251] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:38:31,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:38:31,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-09-20 13:38:31,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370543149] [2024-09-20 13:38:31,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:38:31,657 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 13:38:31,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:38:31,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 13:38:31,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-09-20 13:38:31,657 INFO L87 Difference]: Start difference. First operand 68 states and 98 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-09-20 13:38:31,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:38:31,893 INFO L93 Difference]: Finished difference Result 90 states and 132 transitions. [2024-09-20 13:38:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 13:38:31,893 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 72 [2024-09-20 13:38:31,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:38:31,894 INFO L225 Difference]: With dead ends: 90 [2024-09-20 13:38:31,894 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 13:38:31,894 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2024-09-20 13:38:31,894 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 51 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:38:31,895 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 103 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:38:31,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 13:38:31,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 13:38:31,895 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) [2024-09-20 13:38:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 13:38:31,895 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2024-09-20 13:38:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:38:31,896 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 13:38:31,896 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-09-20 13:38:31,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 13:38:31,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 13:38:31,898 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 11 remaining) [2024-09-20 13:38:31,898 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (9 of 11 remaining) [2024-09-20 13:38:31,898 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (8 of 11 remaining) [2024-09-20 13:38:31,898 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (7 of 11 remaining) [2024-09-20 13:38:31,899 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 11 remaining) [2024-09-20 13:38:31,899 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (5 of 11 remaining) [2024-09-20 13:38:31,899 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (4 of 11 remaining) [2024-09-20 13:38:31,899 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (3 of 11 remaining) [2024-09-20 13:38:31,899 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION (2 of 11 remaining) [2024-09-20 13:38:31,899 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2024-09-20 13:38:31,899 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 11 remaining) [2024-09-20 13:38:31,911 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-20 13:38:32,099 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 [2024-09-20 13:38:32,102 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:38:32,103 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 13:38:32,104 INFO L469 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-09-20 13:38:32,105 INFO L470 ceAbstractionStarter]: WitnessConsidered=2 [2024-09-20 13:38:32,105 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:38:32 BoogieIcfgContainer [2024-09-20 13:38:32,105 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 13:38:32,105 INFO L158 Benchmark]: Toolchain (without parser) took 8599.41ms. Allocated memory was 148.9MB in the beginning and 293.6MB in the end (delta: 144.7MB). Free memory was 74.7MB in the beginning and 163.0MB in the end (delta: -88.3MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2024-09-20 13:38:32,106 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 148.9MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:38:32,106 INFO L158 Benchmark]: Witness Parser took 0.08ms. Allocated memory is still 148.9MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:38:32,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.47ms. Allocated memory is still 148.9MB. Free memory was 74.5MB in the beginning and 60.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-20 13:38:32,106 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.14ms. Allocated memory is still 148.9MB. Free memory was 60.6MB in the beginning and 58.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:38:32,106 INFO L158 Benchmark]: Boogie Preprocessor took 34.74ms. Allocated memory is still 148.9MB. Free memory was 58.8MB in the beginning and 57.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:38:32,106 INFO L158 Benchmark]: RCFGBuilder took 301.76ms. Allocated memory was 148.9MB in the beginning and 201.3MB in the end (delta: 52.4MB). Free memory was 56.9MB in the beginning and 164.2MB in the end (delta: -107.3MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2024-09-20 13:38:32,106 INFO L158 Benchmark]: TraceAbstraction took 7998.29ms. Allocated memory was 201.3MB in the beginning and 293.6MB in the end (delta: 92.3MB). Free memory was 163.2MB in the beginning and 163.0MB in the end (delta: 158.6kB). Peak memory consumption was 92.0MB. Max. memory is 16.1GB. [2024-09-20 13:38:32,107 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 148.9MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.08ms. Allocated memory is still 148.9MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.47ms. Allocated memory is still 148.9MB. Free memory was 74.5MB in the beginning and 60.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.14ms. Allocated memory is still 148.9MB. Free memory was 60.6MB in the beginning and 58.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.74ms. Allocated memory is still 148.9MB. Free memory was 58.8MB in the beginning and 57.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 301.76ms. Allocated memory was 148.9MB in the beginning and 201.3MB in the end (delta: 52.4MB). Free memory was 56.9MB in the beginning and 164.2MB in the end (delta: -107.3MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7998.29ms. Allocated memory was 201.3MB in the beginning and 293.6MB in the end (delta: 92.3MB). Free memory was 163.2MB in the beginning and 163.0MB in the end (delta: 158.6kB). Peak memory consumption was 92.0MB. 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: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 44]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 17]: 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: 14]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 8.0s, OverallIterations: 12, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 159 mSDsluCounter, 1037 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 622 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 812 IncrementalHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 415 mSDtfsCounter, 812 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 733 GetRequests, 662 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=9, InterpolantAutomatonStates: 68, 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, 12 MinimizatonAttempts, 66 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 762 NumberOfCodeBlocks, 729 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 893 ConstructedInterpolants, 0 QuantifiedInterpolants, 6000 SizeOfPredicates, 7 NumberOfNonLiveVariables, 995 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 2005/2105 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 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-20 13:38:32,122 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...