This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:15:46,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:15:46,754 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:15:46,758 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:15:46,759 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:15:46,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:15:46,783 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:15:46,784 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:15:46,784 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:15:46,784 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:15:46,785 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:15:46,785 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:15:46,785 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:15:46,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:15:46,786 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:15:46,786 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:15:46,786 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:15:46,787 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:15:46,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:15:46,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:15:46,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:15:46,788 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:15:46,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:15:46,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:15:46,788 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:15:46,789 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:15:46,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:15:46,789 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:15:46,789 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:15:46,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:15:46,790 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:15:46,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:15:46,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:15:46,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:15:46,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:15:46,791 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:15:46,791 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:15:46,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:15:46,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:15:46,792 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:15:46,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:15:46,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:15:46,795 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:15:47,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:15:47,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:15:47,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:15:47,080 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:15:47,087 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:15:47,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2024-09-15 20:15:48,407 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:15:48,601 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:15:48,603 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2024-09-15 20:15:48,614 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/5019c25d9/50fb5aa86feb4e69a3aab40d16e1b37c/FLAG552a2708c [2024-09-15 20:15:48,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/5019c25d9/50fb5aa86feb4e69a3aab40d16e1b37c [2024-09-15 20:15:48,634 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:15:48,634 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:15:48,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/hard-ll_valuebound1.yml/witness-2.1.yml [2024-09-15 20:15:48,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:15:48,690 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:15:48,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:15:48,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:15:48,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:15:48,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:15:48" (1/2) ... [2024-09-15 20:15:48,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1308aa26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:15:48, skipping insertion in model container [2024-09-15 20:15:48,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:15:48" (1/2) ... [2024-09-15 20:15:48,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@636ad8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:15:48, skipping insertion in model container [2024-09-15 20:15:48,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:15:48" (2/2) ... [2024-09-15 20:15:48,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1308aa26 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:48, skipping insertion in model container [2024-09-15 20:15:48,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:15:48" (2/2) ... [2024-09-15 20:15:48,711 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:15:48,712 INFO L1541 ArrayList]: Loop invariant at [L36-L44] (((((((B == 1) && (p == 2)) && (r == 1)) && (A == 1)) && (d == 2)) && (q == 0)) || ((((((B == 1) && (A == r)) && (A <= 1)) && (d == 1)) && (q == 0)) && (p == 1))) [2024-09-15 20:15:48,712 INFO L1541 ArrayList]: Loop invariant at [L46-L58] ((((((((B == 1) && (p == 2)) && (r == 1)) && (A == 1)) && (d == 2)) && (q == 0)) || ((((((B == 1) && (r == 0)) && (A == 1)) && (d == 1)) && (q == 1)) && (p == 1))) || ((((d == B) && (A == r)) && (q == 0)) && (p == 1))) [2024-09-15 20:15:48,712 INFO L1541 ArrayList]: Function contract at [L14]: requires (\old(cond) != 0), ensures (\old(cond) != 0) [2024-09-15 20:15:48,712 INFO L1541 ArrayList]: Function contract at [L11]: requires null, ensures (\old(cond) != 0) [2024-09-15 20:15:48,731 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:15:48,896 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2024-09-15 20:15:48,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:15:48,935 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-15 20:15:48,972 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] Start Parsing Local Start Parsing Local [2024-09-15 20:15:48,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:15:49,005 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:15:49,005 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49 WrapperNode [2024-09-15 20:15:49,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:15:49,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:15:49,006 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:15:49,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:15:49,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49" (1/1) ... [2024-09-15 20:15:49,016 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49" (1/1) ... [2024-09-15 20:15:49,034 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2024-09-15 20:15:49,034 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:15:49,035 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:15:49,035 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:15:49,035 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:15:49,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49" (1/1) ... [2024-09-15 20:15:49,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49" (1/1) ... [2024-09-15 20:15:49,046 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49" (1/1) ... [2024-09-15 20:15:49,051 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure assume_abort_if_not is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-15 20:15:49,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49" (1/1) ... [2024-09-15 20:15:49,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49" (1/1) ... [2024-09-15 20:15:49,054 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49" (1/1) ... [2024-09-15 20:15:49,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49" (1/1) ... [2024-09-15 20:15:49,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49" (1/1) ... [2024-09-15 20:15:49,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49" (1/1) ... [2024-09-15 20:15:49,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:15:49,060 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:15:49,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:15:49,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:15:49,061 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49" (1/1) ... [2024-09-15 20:15:49,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:15:49,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:15:49,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 20:15:49,101 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 20:15:49,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:15:49,143 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-15 20:15:49,143 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-15 20:15:49,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-15 20:15:49,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:15:49,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:15:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 20:15:49,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 20:15:49,205 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:15:49,208 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:15:49,452 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-15 20:15:49,491 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-09-15 20:15:49,491 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:15:49,516 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:15:49,517 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-15 20:15:49,517 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:15:49 BoogieIcfgContainer [2024-09-15 20:15:49,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:15:49,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:15:49,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:15:49,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:15:49,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:15:48" (1/4) ... [2024-09-15 20:15:49,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c73fcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:15:49, skipping insertion in model container [2024-09-15 20:15:49,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:15:48" (2/4) ... [2024-09-15 20:15:49,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c73fcf1 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:15:49, skipping insertion in model container [2024-09-15 20:15:49,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:15:49" (3/4) ... [2024-09-15 20:15:49,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c73fcf1 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:15:49, skipping insertion in model container [2024-09-15 20:15:49,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:15:49" (4/4) ... [2024-09-15 20:15:49,528 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound1.c [2024-09-15 20:15:49,542 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:15:49,543 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-09-15 20:15:49,591 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:15:49,597 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;@52e9b82c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:15:49,597 INFO L337 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-09-15 20:15:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 25 states have (on average 1.56) internal successors, (39), 30 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-15 20:15:49,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:15:49,609 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:15:49,609 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:15:49,610 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:15:49,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:15:49,615 INFO L85 PathProgramCache]: Analyzing trace with hash 134843102, now seen corresponding path program 1 times [2024-09-15 20:15:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:15:49,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839729222] [2024-09-15 20:15:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:15:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:15:49,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:15:49,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839729222] [2024-09-15 20:15:49,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839729222] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:15:49,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:15:49,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:15:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247267674] [2024-09-15 20:15:49,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:15:49,751 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 20:15:49,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:15:49,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 20:15:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 20:15:49,775 INFO L87 Difference]: Start difference. First operand has 43 states, 25 states have (on average 1.56) internal successors, (39), 30 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:15:49,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:15:49,800 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2024-09-15 20:15:49,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 20:15:49,802 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-15 20:15:49,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:15:49,810 INFO L225 Difference]: With dead ends: 43 [2024-09-15 20:15:49,811 INFO L226 Difference]: Without dead ends: 41 [2024-09-15 20:15:49,812 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 20:15:49,814 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:15:49,815 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:15:49,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-15 20:15:49,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-15 20:15:49,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 29 states have internal predecessors, (32), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-15 20:15:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2024-09-15 20:15:49,846 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 5 [2024-09-15 20:15:49,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:15:49,846 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2024-09-15 20:15:49,847 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:15:49,847 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2024-09-15 20:15:49,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:15:49,847 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:15:49,847 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:15:49,848 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:15:49,848 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:15:49,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:15:49,850 INFO L85 PathProgramCache]: Analyzing trace with hash 134843164, now seen corresponding path program 1 times [2024-09-15 20:15:49,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:15:49,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610927061] [2024-09-15 20:15:49,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:49,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:15:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:15:49,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:15:49,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610927061] [2024-09-15 20:15:49,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610927061] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:15:49,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:15:49,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:15:49,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687181080] [2024-09-15 20:15:49,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:15:49,932 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:15:49,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:15:49,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:15:49,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:15:49,933 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:15:49,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:15:49,977 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2024-09-15 20:15:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:15:49,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-15 20:15:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:15:49,978 INFO L225 Difference]: With dead ends: 40 [2024-09-15 20:15:49,979 INFO L226 Difference]: Without dead ends: 40 [2024-09-15 20:15:49,979 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:15:49,980 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:15:49,980 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 121 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:15:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-15 20:15:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-15 20:15:49,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 28 states have internal predecessors, (31), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-15 20:15:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2024-09-15 20:15:49,985 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 5 [2024-09-15 20:15:49,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:15:49,985 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2024-09-15 20:15:49,985 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:15:49,985 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2024-09-15 20:15:49,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-15 20:15:49,986 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:15:49,986 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:15:49,986 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 20:15:49,986 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:15:49,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:15:49,987 INFO L85 PathProgramCache]: Analyzing trace with hash 363565673, now seen corresponding path program 1 times [2024-09-15 20:15:49,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:15:49,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245111113] [2024-09-15 20:15:49,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:49,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:15:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:50,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:15:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:50,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:15:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:50,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:15:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:15:50,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:15:50,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245111113] [2024-09-15 20:15:50,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245111113] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:15:50,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:15:50,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-15 20:15:50,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334718994] [2024-09-15 20:15:50,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:15:50,408 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-15 20:15:50,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:15:50,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-15 20:15:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-15 20:15:50,409 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 20:15:50,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:15:50,546 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2024-09-15 20:15:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-15 20:15:50,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2024-09-15 20:15:50,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:15:50,547 INFO L225 Difference]: With dead ends: 51 [2024-09-15 20:15:50,547 INFO L226 Difference]: Without dead ends: 51 [2024-09-15 20:15:50,547 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-15 20:15:50,548 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:15:50,548 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 113 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:15:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-15 20:15:50,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-09-15 20:15:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 20:15:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-09-15 20:15:50,559 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 19 [2024-09-15 20:15:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:15:50,559 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-09-15 20:15:50,559 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 20:15:50,560 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-09-15 20:15:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-15 20:15:50,560 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:15:50,560 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:15:50,560 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-15 20:15:50,560 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:15:50,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:15:50,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1764960997, now seen corresponding path program 1 times [2024-09-15 20:15:50,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:15:50,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274106089] [2024-09-15 20:15:50,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:50,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:15:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:50,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:15:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:50,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:15:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:50,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:15:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:15:50,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:15:50,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274106089] [2024-09-15 20:15:50,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274106089] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:15:50,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:15:50,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:15:50,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850973985] [2024-09-15 20:15:50,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:15:50,626 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:15:50,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:15:50,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:15:50,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:15:50,628 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 20:15:50,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:15:50,636 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2024-09-15 20:15:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:15:50,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-09-15 20:15:50,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:15:50,640 INFO L225 Difference]: With dead ends: 49 [2024-09-15 20:15:50,640 INFO L226 Difference]: Without dead ends: 49 [2024-09-15 20:15:50,640 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:15:50,641 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:15:50,641 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:15:50,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-15 20:15:50,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-09-15 20:15:50,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 32 states have internal predecessors, (36), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 20:15:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-09-15 20:15:50,647 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 24 [2024-09-15 20:15:50,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:15:50,647 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-09-15 20:15:50,648 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 20:15:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-09-15 20:15:50,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-15 20:15:50,649 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:15:50,649 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:15:50,649 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-15 20:15:50,649 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:15:50,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:15:50,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1764960836, now seen corresponding path program 1 times [2024-09-15 20:15:50,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:15:50,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988700640] [2024-09-15 20:15:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:50,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:15:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:50,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:15:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:50,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:15:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:50,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:15:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:15:50,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:15:50,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988700640] [2024-09-15 20:15:50,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988700640] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:15:50,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:15:50,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:15:50,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212199711] [2024-09-15 20:15:50,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:15:50,689 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:15:50,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:15:50,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:15:50,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:15:50,690 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 20:15:50,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:15:50,718 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2024-09-15 20:15:50,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:15:50,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-09-15 20:15:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:15:50,719 INFO L225 Difference]: With dead ends: 48 [2024-09-15 20:15:50,719 INFO L226 Difference]: Without dead ends: 48 [2024-09-15 20:15:50,720 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:15:50,722 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:15:50,722 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 68 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:15:50,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-15 20:15:50,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-15 20:15:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 20:15:50,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2024-09-15 20:15:50,728 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 24 [2024-09-15 20:15:50,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:15:50,729 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2024-09-15 20:15:50,729 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 20:15:50,729 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2024-09-15 20:15:50,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-15 20:15:50,730 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:15:50,730 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:15:50,730 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-15 20:15:50,730 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:15:50,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:15:50,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1154352905, now seen corresponding path program 1 times [2024-09-15 20:15:50,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:15:50,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544718419] [2024-09-15 20:15:50,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:50,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:15:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:51,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:15:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:51,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:15:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:51,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:15:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:51,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 20:15:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:51,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-15 20:15:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:51,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-15 20:15:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:15:51,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:15:51,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544718419] [2024-09-15 20:15:51,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544718419] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:15:51,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861611245] [2024-09-15 20:15:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:51,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:15:51,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:15:51,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:15:51,101 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 20:15:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:51,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-15 20:15:51,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:15:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:15:51,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:15:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:15:51,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861611245] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:15:51,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:15:51,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-09-15 20:15:51,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530743636] [2024-09-15 20:15:51,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:15:51,722 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:15:51,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:15:51,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:15:51,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-15 20:15:51,722 INFO L87 Difference]: Start difference. First operand 48 states and 63 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2024-09-15 20:15:51,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:15:51,791 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions. [2024-09-15 20:15:51,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:15:51,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 37 [2024-09-15 20:15:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:15:51,792 INFO L225 Difference]: With dead ends: 55 [2024-09-15 20:15:51,792 INFO L226 Difference]: Without dead ends: 55 [2024-09-15 20:15:51,793 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-15 20:15:51,793 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 9 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:15:51,793 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 70 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:15:51,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-15 20:15:51,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2024-09-15 20:15:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 20:15:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-09-15 20:15:51,801 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 37 [2024-09-15 20:15:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:15:51,801 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-09-15 20:15:51,801 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2024-09-15 20:15:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-09-15 20:15:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-15 20:15:51,806 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:15:51,806 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:15:51,819 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-15 20:15:52,008 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-15 20:15:52,009 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:15:52,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:15:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1515868503, now seen corresponding path program 1 times [2024-09-15 20:15:52,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:15:52,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315620307] [2024-09-15 20:15:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:52,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:15:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:15:52,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [362919988] [2024-09-15 20:15:52,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:52,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:15:52,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:15:52,050 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:15:52,051 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 20:15:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:52,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-15 20:15:52,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:15:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-15 20:15:52,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:15:52,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:15:52,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315620307] [2024-09-15 20:15:52,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:15:52,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362919988] [2024-09-15 20:15:52,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362919988] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:15:52,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:15:52,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-15 20:15:52,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416084629] [2024-09-15 20:15:52,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:15:52,246 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:15:52,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:15:52,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:15:52,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:15:52,246 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-15 20:15:52,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:15:52,336 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2024-09-15 20:15:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:15:52,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2024-09-15 20:15:52,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:15:52,338 INFO L225 Difference]: With dead ends: 51 [2024-09-15 20:15:52,338 INFO L226 Difference]: Without dead ends: 51 [2024-09-15 20:15:52,338 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:15:52,338 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:15:52,339 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 87 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:15:52,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-15 20:15:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2024-09-15 20:15:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 31 states have internal predecessors, (33), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-15 20:15:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 67 transitions. [2024-09-15 20:15:52,346 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 67 transitions. Word has length 50 [2024-09-15 20:15:52,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:15:52,346 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 67 transitions. [2024-09-15 20:15:52,346 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-15 20:15:52,346 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 67 transitions. [2024-09-15 20:15:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-15 20:15:52,347 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:15:52,347 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:15:52,361 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-15 20:15:52,551 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-15 20:15:52,553 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:15:52,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:15:52,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2018739730, now seen corresponding path program 1 times [2024-09-15 20:15:52,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:15:52,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851841053] [2024-09-15 20:15:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:52,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:15:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:52,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:15:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:52,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:15:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:52,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:15:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:52,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 20:15:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:52,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-15 20:15:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:52,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-15 20:15:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:52,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 20:15:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:52,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 20:15:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:52,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 20:15:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-15 20:15:52,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:15:52,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851841053] [2024-09-15 20:15:52,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851841053] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:15:52,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:15:52,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:15:52,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395051170] [2024-09-15 20:15:52,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:15:52,624 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:15:52,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:15:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:15:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:15:52,625 INFO L87 Difference]: Start difference. First operand 50 states and 67 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-15 20:15:52,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:15:52,649 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2024-09-15 20:15:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:15:52,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2024-09-15 20:15:52,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:15:52,650 INFO L225 Difference]: With dead ends: 51 [2024-09-15 20:15:52,650 INFO L226 Difference]: Without dead ends: 44 [2024-09-15 20:15:52,650 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:15:52,651 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:15:52,651 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:15:52,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-15 20:15:52,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-09-15 20:15:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 20:15:52,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 57 transitions. [2024-09-15 20:15:52,654 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 57 transitions. Word has length 55 [2024-09-15 20:15:52,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:15:52,655 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 57 transitions. [2024-09-15 20:15:52,655 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-15 20:15:52,655 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 57 transitions. [2024-09-15 20:15:52,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-15 20:15:52,656 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:15:52,656 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:15:52,656 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-15 20:15:52,656 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:15:52,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:15:52,657 INFO L85 PathProgramCache]: Analyzing trace with hash -550970448, now seen corresponding path program 1 times [2024-09-15 20:15:52,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:15:52,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498485360] [2024-09-15 20:15:52,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:52,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:15:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:53,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:15:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:53,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:15:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:53,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:15:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:53,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 20:15:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:53,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-15 20:15:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:53,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-15 20:15:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:53,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 20:15:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:53,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 20:15:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:53,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 20:15:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:53,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 20:15:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:53,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 20:15:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-09-15 20:15:53,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:15:53,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498485360] [2024-09-15 20:15:53,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498485360] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:15:53,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993893036] [2024-09-15 20:15:53,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:53,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:15:53,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:15:53,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:15:53,192 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 20:15:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:53,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-15 20:15:53,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:15:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-15 20:15:53,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:15:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-09-15 20:15:53,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993893036] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:15:53,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:15:53,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 10 [2024-09-15 20:15:53,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968664094] [2024-09-15 20:15:53,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:15:53,966 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 20:15:53,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:15:53,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 20:15:53,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-09-15 20:15:53,967 INFO L87 Difference]: Start difference. First operand 44 states and 57 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-15 20:15:54,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:15:54,014 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-09-15 20:15:54,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:15:54,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 69 [2024-09-15 20:15:54,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:15:54,015 INFO L225 Difference]: With dead ends: 41 [2024-09-15 20:15:54,015 INFO L226 Difference]: Without dead ends: 41 [2024-09-15 20:15:54,015 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-09-15 20:15:54,016 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:15:54,016 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 59 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:15:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-15 20:15:54,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-15 20:15:54,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.0) internal successors, (24), 24 states have internal predecessors, (24), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 20:15:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2024-09-15 20:15:54,019 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 69 [2024-09-15 20:15:54,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:15:54,019 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2024-09-15 20:15:54,020 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-15 20:15:54,020 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2024-09-15 20:15:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-15 20:15:54,021 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:15:54,021 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 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, 1, 1, 1, 1] [2024-09-15 20:15:54,033 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-15 20:15:54,225 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-09-15 20:15:54,226 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:15:54,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:15:54,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1381978582, now seen corresponding path program 1 times [2024-09-15 20:15:54,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:15:54,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013410454] [2024-09-15 20:15:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:54,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:15:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:15:54,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043320657] [2024-09-15 20:15:54,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:54,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:15:54,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:15:54,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:15:54,261 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 20:15:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:54,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-15 20:15:54,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:15:54,409 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-09-15 20:15:54,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:15:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-09-15 20:15:54,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:15:54,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013410454] [2024-09-15 20:15:54,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:15:54,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043320657] [2024-09-15 20:15:54,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043320657] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:15:54,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:15:54,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-09-15 20:15:54,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225131753] [2024-09-15 20:15:54,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 20:15:54,554 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 20:15:54,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:15:54,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 20:15:54,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:15:54,555 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 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) [2024-09-15 20:15:54,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:15:54,608 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2024-09-15 20:15:54,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:15:54,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 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 82 [2024-09-15 20:15:54,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:15:54,609 INFO L225 Difference]: With dead ends: 40 [2024-09-15 20:15:54,609 INFO L226 Difference]: Without dead ends: 40 [2024-09-15 20:15:54,609 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-09-15 20:15:54,610 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:15:54,610 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 138 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:15:54,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-15 20:15:54,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-15 20:15:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.0) internal successors, (23), 23 states have internal predecessors, (23), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 20:15:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2024-09-15 20:15:54,613 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 82 [2024-09-15 20:15:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:15:54,613 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2024-09-15 20:15:54,613 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 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) [2024-09-15 20:15:54,614 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2024-09-15 20:15:54,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-15 20:15:54,614 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:15:54,615 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-09-15 20:15:54,630 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-15 20:15:54,818 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:15:54,819 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:15:54,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:15:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1551961905, now seen corresponding path program 1 times [2024-09-15 20:15:54,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:15:54,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528462769] [2024-09-15 20:15:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:54,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:15:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:15:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:15:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:15:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 20:15:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-15 20:15:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-15 20:15:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 20:15:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 20:15:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 20:15:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 20:15:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 20:15:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 20:15:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 20:15:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-15 20:15:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2024-09-15 20:15:55,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:15:55,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528462769] [2024-09-15 20:15:55,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528462769] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:15:55,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207052314] [2024-09-15 20:15:55,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:15:55,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:15:55,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:15:55,101 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) [2024-09-15 20:15:55,108 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 20:15:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:15:55,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-15 20:15:55,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:15:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-15 20:15:55,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:15:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-09-15 20:15:55,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207052314] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:15:55,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:15:55,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 8] total 12 [2024-09-15 20:15:55,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784586406] [2024-09-15 20:15:55,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:15:55,630 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:15:55,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:15:55,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:15:55,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-09-15 20:15:55,631 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-15 20:15:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:15:55,661 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2024-09-15 20:15:55,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:15:55,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 87 [2024-09-15 20:15:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:15:55,662 INFO L225 Difference]: With dead ends: 39 [2024-09-15 20:15:55,662 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:15:55,663 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-09-15 20:15:55,663 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:15:55,663 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:15:55,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:15:55,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:15:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:15:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:15:55,664 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2024-09-15 20:15:55,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:15:55,664 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:15:55,664 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-15 20:15:55,665 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:15:55,665 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:15:55,667 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 12 remaining) [2024-09-15 20:15:55,667 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (10 of 12 remaining) [2024-09-15 20:15:55,667 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (9 of 12 remaining) [2024-09-15 20:15:55,667 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (8 of 12 remaining) [2024-09-15 20:15:55,667 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 12 remaining) [2024-09-15 20:15:55,667 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (6 of 12 remaining) [2024-09-15 20:15:55,667 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (5 of 12 remaining) [2024-09-15 20:15:55,667 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (4 of 12 remaining) [2024-09-15 20:15:55,668 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION (3 of 12 remaining) [2024-09-15 20:15:55,668 INFO L785 garLoopResultBuilder]: Registering result SAFE for location assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 12 remaining) [2024-09-15 20:15:55,668 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 12 remaining) [2024-09-15 20:15:55,668 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 12 remaining) [2024-09-15 20:15:55,681 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-15 20:15:55,868 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-15 20:15:55,871 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:15:55,873 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:15:55,875 INFO L469 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-09-15 20:15:55,875 INFO L470 ceAbstractionStarter]: WitnessConsidered=2 [2024-09-15 20:15:55,876 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:15:55 BoogieIcfgContainer [2024-09-15 20:15:55,876 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:15:55,876 INFO L158 Benchmark]: Toolchain (without parser) took 7186.74ms. Allocated memory was 79.7MB in the beginning and 207.6MB in the end (delta: 127.9MB). Free memory was 40.8MB in the beginning and 85.8MB in the end (delta: -45.0MB). Peak memory consumption was 85.8MB. Max. memory is 16.1GB. [2024-09-15 20:15:55,876 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 79.7MB. Free memory is still 58.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:15:55,876 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 79.7MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:15:55,877 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.10ms. Allocated memory is still 79.7MB. Free memory was 40.6MB in the beginning and 50.4MB in the end (delta: -9.8MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2024-09-15 20:15:55,877 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.25ms. Allocated memory is still 79.7MB. Free memory was 50.1MB in the beginning and 48.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:15:55,877 INFO L158 Benchmark]: Boogie Preprocessor took 24.26ms. Allocated memory is still 79.7MB. Free memory was 48.4MB in the beginning and 46.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:15:55,877 INFO L158 Benchmark]: RCFGBuilder took 459.56ms. Allocated memory was 79.7MB in the beginning and 140.5MB in the end (delta: 60.8MB). Free memory was 46.7MB in the beginning and 113.7MB in the end (delta: -67.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-15 20:15:55,877 INFO L158 Benchmark]: TraceAbstraction took 6354.88ms. Allocated memory was 140.5MB in the beginning and 207.6MB in the end (delta: 67.1MB). Free memory was 113.0MB in the beginning and 85.8MB in the end (delta: 27.2MB). Peak memory consumption was 94.9MB. Max. memory is 16.1GB. [2024-09-15 20:15:55,878 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 79.7MB. Free memory is still 58.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 79.7MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.10ms. Allocated memory is still 79.7MB. Free memory was 40.6MB in the beginning and 50.4MB in the end (delta: -9.8MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.25ms. Allocated memory is still 79.7MB. Free memory was 50.1MB in the beginning and 48.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.26ms. Allocated memory is still 79.7MB. Free memory was 48.4MB in the beginning and 46.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 459.56ms. Allocated memory was 79.7MB in the beginning and 140.5MB in the end (delta: 60.8MB). Free memory was 46.7MB in the beginning and 113.7MB in the end (delta: -67.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6354.88ms. Allocated memory was 140.5MB in the beginning and 207.6MB in the end (delta: 67.1MB). Free memory was 113.0MB in the beginning and 85.8MB in the end (delta: 27.2MB). Peak memory consumption was 94.9MB. 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: 36]: 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: 46]: 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: 11]: procedure postcondition always holds For all program executions holds that procedure postcondition 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 3 procedures, 43 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 6.3s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 97 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 905 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 493 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 388 IncrementalHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 412 mSDtfsCounter, 388 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 726 GetRequests, 676 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=3, InterpolantAutomatonStates: 48, 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, 11 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 782 NumberOfCodeBlocks, 782 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 907 ConstructedInterpolants, 0 QuantifiedInterpolants, 3915 SizeOfPredicates, 12 NumberOfNonLiveVariables, 754 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 1729/1763 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 20:15:55,904 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...